Table of Contents<\/h4>\n\n- What is the combo test for flu, COVID-19, and RSV?<\/a><\/li>\n
- How does the combo test work? \u2013 Quick diagnosis in 15 minutes<\/a><\/li>\n
- When is it worth performing a combo test?<\/a><\/li>\n
- How to properly perform a combo test at home?<\/a><\/li>\n
- Interpretation of combo test results for flu, COVID-19, and RSV<\/a><\/li>\n
- What to do after receiving the result? Next steps and medical consultation<\/a><\/li>\n<\/ul>\n
What is the combo test for flu, COVID-19, and RSV?<\/h2>\n
The combo test for flu, COVID-19, and RSV is a simultaneous examination targeting the three most common viral causes of acute respiratory tract infection: types A and B influenza virus<\/a>, SARS\u2011CoV\u20112 (responsible for COVID\u201119), and RSV (respiratory syncytial virus). In practice, this means that with a single sample \u2014 most often a nasal or nasopharyngeal swab \u2014 you can determine which of these pathogens is causing symptoms such as fever, cough, runny nose, sore throat, muscle aches, or shortness of breath. Depending on the technology used, two main types of combo tests are distinguished: rapid antigen tests and more accurate molecular tests (RT\u2011PCR or other nucleic acid amplification methods). Antigen tests detect specific viral proteins (antigens) present in respiratory secretions, providing results usually within several to tens of minutes, often immediately at a family doctor’s office, clinic, or swab point. Molecular tests search for the virus’s genetic material (RNA), offering higher sensitivity and specificity but requiring specialized lab equipment and longer waiting times for results (generally from several hours up to 1\u20132 days). Regardless of the method, the combo test aims for quick diagnostic narrowing and identification of the specific cause, which in many cases allows for appropriate treatment decisions (e.g., initiating antiviral drugs for flu), necessity of isolation, monitoring risk of complications, or tailoring further diagnostics. From a patient\u2019s perspective, the most important advantage is that instead of undergoing three separate tests \u2014 individually for flu, COVID\u201119, and RSV \u2014 just one sample is required, which is more convenient, less stressful (especially for children and the elderly), and often more economical. Combo tests are increasingly recommended during infection seasons, when several different viruses circulate simultaneously in the population, and clinical symptoms alone cannot reliably differentiate between flu, COVID\u201119, or RSV infection. For doctors, they are a valuable tool supporting decision-making, reducing the risk of unnecessary antibiotic use, and helping in patient triage in hospitals (e.g., proper placement in isolation rooms, assessment of severe course risk).<\/p>\nTechnically, a combo test is designed to include several separate reaction pathways in a single diagnostic “panel”\u2014each responsible for detecting a different virus. For antigen tests, this usually manifests as several separate lines on the test cassette: one control line (C), confirming the test was performed correctly, and three test lines (typically for flu, SARS\u2011CoV\u20112, and RSV). In molecular tests, different primers and probes are used in the same amplification reaction cycle, each targeting RNA fragments for the respective viruses, enabling their simultaneous detection from a single sample. Modern panels can additionally detect flu subtypes (e.g., A\/H1N1, A\/H3N2) or distinguish between flu A and B, which is epidemiologically and clinically relevant. Combo tests are particularly useful because the clinical picture of infection with these viruses significantly overlaps, especially at the outset of illness\u2014both flu, COVID\u201119, and RSV infection can present with high fever, malaise, cough, headache, runny nose, and in some patients, also shortness of breath or wheezing. Based on symptoms alone, even experienced doctors often cannot clearly differentiate which virus is responsible, which affects therapy choice, isolation period, and guidelines for household members and contacts. That is why the combo test has become an important diagnostic tool during the autumn-winter season and periods of increased incidence, especially for high-risk groups (seniors, pregnant women, people with chronic diseases, infants, and young children). It should also be noted that the choice of a specific level of combo test (antigen or molecular) depends on the examination purpose, local facility availability, general epidemiological situation, and the patient’s condition\u2014in certain clinical situations, e.g., hospitalized patients, more sensitive molecular tests are preferred, while in primary care or in Emergency Departments, rapid antigen tests are often used to enable immediate therapeutic and organizational decisions.<\/p>\n
How does the combo test work? \u2013 Quick diagnosis in 15 minutes<\/h2>\n
The combo test for flu, COVID-19, and RSV has been designed to provide as much key information as possible about the cause of a respiratory infection in the shortest time possible, with straightforward testing procedure. Most antigen combo tests available on the market work based on the same lateral flow immunochromatography technology also used in pregnancy tests. The process begins by collecting a sample\u2014usually a swab from the front part of the nose or from the nasopharynx. A healthcare professional or trained diagnostician inserts a special swab into the nose to a specified depth, gently rotates it for several seconds, and then places the collected material in a tube with extraction buffer. This fluid \u201cwashes out\u201d viral antigens from the surface of epithelial cells\u2014if influenza, SARS-CoV-2, or RSV viral particles are present, their characteristic proteins enter the solution. Then, a few drops of the prepared sample are applied to a special test window on the cassette. The liquid moves across the test membrane by capillary action. Antibodies embedded in the test, specific for each virus’s antigens, are pre-applied in designated zones\u2014each for a separate pathogen (one line for flu, another for COVID-19, another for RSV), plus a control line. If antigens of a given virus are present in the sample, they bind to dye-labeled antibodies, forming complexes which are \u2018captured\u2019 on the appropriate test line. As a result, after a short time of several minutes, one or more colored stripes appear in the test window, indicating which virus has been detected; the control line demonstrates that the test worked properly\u2014its absence indicates a technical error or testing problem. Owing to this simple but meticulously developed immunological reaction, rapid diagnosis \u201cat the patient’s bedside\u201d (point-of-care) is possible without sending samples to a laboratory\u2014the result is usually available 10 to 15 minutes after applying the sample to the cassette. The combo test is generally calibrated to detect relatively high antigen concentrations for a rapid response and to minimize cross-reactions with other seasonal pathogens.<\/p>\n
In clinical practice, the combo test works as a rapid triage tool, and its diagnostic effectiveness depends on several factors: quality of swab sampling, time of testing relative to symptom onset, and correct result interpretation. The highest viral antigen concentrations in the respiratory tract occur in the first days of infection; therefore, a combo test is most effective when performed within 3\u20135 days of appearance of fever<\/a>, cough, sore throat, or runny nose; for children or severe courses, the \u201cdiagnostic window\u201d may be slightly longer. Technically, after sample application, the patient or personnel should time as specified in the instructions (e.g., 15 minutes) and only then read the lines\u2014the result may be inaccurate if read too early or too late. Depending on the manufacturer, the combo test may detect both single infection (e.g. flu only) and mixed infection (coinfection), when two or even all three viruses are active simultaneously in one patient. For doctors, this is important, since coinfections can be more severe and influence decisions about therapy, isolation, and monitoring differently than single infections. Compared to classic RT-PCR, antigen combo tests are mainly distinguished by speed and accessibility\u2014they don’t require complex equipment or a laboratory, so they can be used at a family physician\u2019s office, ER, nursing homes, and even in mobile settings. Sensitivity is generally lower than molecular methods, so in people at high risk of severe disease or with atypical clinical presentations, confirmation with RT-PCR may be warranted. On an organizational level, the ability to detect three different viruses from one sample greatly simplifies staff workflow: shortens patient contact, reduces material consumption, and enables rapid decisions about isolation and antiviral therapy. That\u2019s why the combo test is an important diagnostic part of autumn-winter strategies, when many respiratory infections overlap and it\u2019s hard to \u201ceyeball\u201d whether you\u2019re dealing with flu, COVID-19, or RSV.<\/p>\n
\n![\"Combo](\"https:\/\/najzdrowie.pl\/wp-content\/uploads\/Test_Combo_na_Gryp___COVID_19_i_RSV__Kiedy_i_Jak_Wykona___Interpretacja_Wynik_w-1.webp\")
\n<\/a><\/p>\nWhen is it worth performing a combo test?<\/h2>\n
The combo test for flu, COVID-19, and RSV is particularly advisable when acute respiratory symptoms appear and it is initially unclear which virus may be responsible. Typical symptoms include: sudden fever or low-grade fever, chills, muscle and joint aches, severe fatigue, dry or dry<\/a> or productive cough<\/a>, sore throat, runny or blocked nose, headache, and in some patients, shortness of breath or chest tightness. Performing the test is especially important if symptoms appeared recently\u2014usually within the first 5\u20137 days of onset\u2014since viral antigens are then most concentrated in the airways, maximizing test reliability. The combo test is also key if the patient had contact with someone confirmed to be infected (in family, at work, school, nursery) and then develops symptoms\u2014rapid confirmation or exclusion helps prevent further virus spread and supports responsible decisions about isolation or return to work. Particularly low \u201ctesting threshold\u201d for the combo test is recommended for people at high risk for severe disease: seniors (usually over 60\u201365 years old), people with chronic illnesses (e.g. heart, lung, kidney, liver disease, diabetes, obesity), immunocompromised (post-transplant, cancer treatment, on immunosuppressants), and pregnant women. In these patients, early determination of whether symptoms are due to flu, SARS-CoV\u20112, or RSV can enable prompt appropriate therapy (antiviral drugs or oxygen) and reduce risk of complications, hospitalization, or intensive care. The combo test is also worth considering in small children, especially under 2 years of age, who are more prone to severe RSV or flu; in infants, even apparently \u201cordinary\u201d runny nose may progress quickly to bronchiolitis or pneumonia, so when there is a sudden deterioration, rapid breathing, feeding difficulties, or high fever, a doctor often orders this test to better assess and plan further management.<\/p>\nA combo test is also justified for organizational or epidemiological reasons, when result drives decisions about isolation, quarantine, or clearance for work and care of others. This applies to, for example, healthcare workers, nursing home caregivers, teachers, nursery and preschool staff, and other people in frequent contact with high-risk groups. For them, rapid discrimination between flu, COVID\u201119, and RSV supports better staffing management, limits spread within the facility, and protects clients and residents. The test is also useful if a patient is scheduled for surgery, hospitalization, rehabilitation, or spa stay\u2014onset of symptoms just before admission may require swift diagnostics so as not to expose other patients to infection, but also to avoid unnecessary withdrawal if the test rules out current infection with major viruses. In autumn-winter, as several pathogens circulate, the combo test should be considered a key tool for differentiating symptoms, especially in those falling ill despite vaccination for flu or COVID\u201119<\/a>\u2014because infection is still possible post-vaccination, but knowing the specific virus helps predict disease course, risk of complications, and choose optimal symptomatic and antiviral therapy. Finally, a combo test can help in life decisions: before visiting very elderly parents or grandparents, before attending major family events with children and chronically ill people, or before foreign travel if regulations of the carrier, hotel, or destination still mandate epidemiological safety rules. In such cases, doing the test with even mild symptoms or after recent exposure helps make an informed decision about the safety of travel or a meeting and reduces risk of unknowingly transmitting the virus to the most vulnerable. Although the final decision is best made in consultation with a doctor, the patient should remember that time is crucial\u2014the earlier the test is performed, the more reliable the outcome and the greater the chance for prompt, targeted medical management.<\/p>\nHow to properly perform a combo test at home?<\/h2>\n
Performing a home combo test for flu, COVID-19, and RSV primarily requires carefully reading the manufacturer\u2019s instructions, as each test may differ in details and procedure. Before you start, prepare a clean, well-lit work surface, wash your hands with warm soapy water or disinfect them with an alcohol-based gel, and make sure the test package is undamaged and not expired\u2014the expiry date has a direct impact on test reliability. The kit usually includes: a test cassette (or test card), swab, tube with buffer\/extraction solution, a dropper or dripper tip, and instructions. The test should not be performed immediately after eating, drinking, chewing gum, or smoking if the manufacturer notes such a warning\u2014wait at least 15\u201330 minutes. Before opening anything, make sure you have a timer or watch\u2014the correct incubation time measurement is crucial. Once you remove the test cassette from its foil package, place it flat on the table, avoiding touching the readout or reaction areas. Next, prepare the solution: in most kits, simply pour the buffer into the tube or gently squeeze the bottle to make the fluid flow out; if unclear, always follow the booklet\u2019s graphical scheme. Do not mix parts from different kits, do not reuse the swab or tube, and do not open the cassette too early\u2014do so right before you collect the sample. If testing a child, calmly explain what will happen, show the swab, and warn them that there may be a brief discomfort in the nose; another person may gently hold the child\u2019s head to minimize movement during sampling. Also ensure biological safety: sneezing or coughing while sampling can spread germs, so wear a mask and disposable gloves, especially if testing someone else.<\/p>\n
The actual process of nasal swab sampling is crucial for the test\u2019s sensitivity. Most manufacturers recommend sampling from the anterior part of the nose (anterior nares), less invasive than a classic nasopharyngeal swab but still providing good material if the technique is correct. Gently blow your nose (or have the child do so if possible), then insert the swab into one nostril\u2014slowly, parallel to the palate, about 1.5\u20132 cm deep in adults (a bit shallower in small children, per the instructions). When you feel slight resistance, rotate the swab a few times (usually 4\u20135), making sure its tip touches the sides, then gently withdraw and repeat in the other nostril using the same swab\u2014this is important because material from both sides increases the chance of virus detection. After sampling, put the swab tip in the buffer tube, press it against the wall and twist or squeeze the tube several times to thoroughly wash the biological material into solution; some instructions call for leaving the swab in the fluid for a set number of seconds, others for removing and discarding it after mixing\u2014so following the exact directions is crucial. Next, cap the tube or put on the dropper, gently shake, and apply the specified number of drops (usually 3\u20134) to the proper window on the test cassette, marked as “S” (sample). Set the timer for the incubation time shown in the leaflet\u2014usually 10\u201315 minutes\u2014do not move or disturb the cassette, and do not exceed the upper readout limit, as a result read too late may be falsely positive or unreadable. The control line (C) should appear first while waiting; its absence means the test was invalid or the kit is faulty. The test lines for each virus (e.g., “Flu A”, “Flu B”, “COVID-19”, “RSV”) may differ in intensity\u2014even a pale but visible line is typically interpreted as positive per instructions. After reading the result, all used items (swab, tube, cassette, gloves) should be placed in a plastic bag, sealed, and thrown into general waste, and then hands should be washed or disinfected again. If the result is unclear, inconsistent with the clinical picture (e.g., severe symptoms with negative test), or you have trouble interpreting faint lines, contact your doctor and possibly confirm with another laboratory method (e.g. RT-PCR).<\/p>\n
Interpretation of combo test results for flu, COVID-19, and RSV<\/h2>\n
The result of a combo test for flu, COVID-19, and RSV should always be interpreted in the context of symptoms, their duration, and the patient\u2019s general health status. The test cassette usually has four reading fields\u2014one control (C) and three for the respective pathogens, usually described as FLU (sometimes separated into flu A and B), COVID-19 (SARS-CoV-2), and RSV. The appearance of a clear line in the C field means the test was correctly performed and the result can be considered reliable; absence of this line means the test is invalid, regardless of other strips. A negative result for all three viruses (only the C line is visible) suggests that the tested antigens were not detected in the sample at test time, which most often means no active infection with flu, COVID-19, or RSV. However, this does not rule out infection with other viruses or bacteria, nor does it rule out very early or late stages of infection when antigen concentration may be too low for detection. If symptoms are severe, persist, or worsen despite a negative result, a doctor\u2019s consultation is advised, with possible repeat testing, a PCR test, or additional diagnostics. A positive result for any single virus means its antigen was detected, usually indicating active infection. For example, a line in the COVID-19 field along with the control line indicates SARS-CoV-2 infection, with no line for FLU or RSV suggesting those viruses were not detected. Likewise, a positive line at FLU confirms flu and at RSV\u2014RSV infection, which is especially dangerous for small children, premature infants, seniors, and those with chronic illnesses. After receiving a positive result for any pathogen, its clinical context is crucial: the doctor will judge whether antiviral therapy (as in flu), antibiotics for bacterial superinfection, or just observation, hydration, and supportive therapy are needed. Note that the intensity of the test line (fainter or darker) does not directly correspond to \u201cstrength\u201d or severity of infection\u2014even a pale line is treated as positive if within the result readout time specified by the manufacturer.<\/p>\n
An especially important case is a multiple positive result, for example, simultaneous lines for FLU and COVID-19 or RSV. Such co-infections are possible, particularly in the autumn-winter season, and may involve a more severe course, especially in high-risk groups. This result requires urgent medical consultation, as hospitalization, more intense monitoring, or the use of multiple therapies at once may be necessary. The doctor will consider the patient\u2019s age, comorbidities (e.g. COPD, asthma<\/a>, diabetes, heart failure), oxygen saturation, respiratory rate, and overall fitness. Also, be aware of possible false positive and false negative outcomes. A false positive may occur due to sample contamination, incorrect readout timing (too long after suggested interval), or technical errors. False negatives most often result when the swab is taken too early (first hours post-symptom onset), too late (after acute phase), not deep enough, or not according to procedure. Therefore, significant symptoms and high probability of contact may prompt the doctor to recommend re-testing after 24\u201348 hours, a more sensitive test (e.g. RT-PCR), or broader blood or imaging tests. Also consider patient vaccination status\u2014someone vaccinated for flu or COVID-19 can still become infected, but courses tend to be milder. The combo test detects virus antigen, not vaccine-induced antibodies, so a positive result means current infection, not just \u201cimmune memory\u201d. Regardless of the result, it is key to follow sanitary-epidemiological recommendations: with a positive result, home isolation is usually required, avoid contact with high-risk persons, and inform your doctor and, if appropriate, your employer. If negative but symptoms persist, remain cautious, stay home until improvement, and monitor health, as other respiratory viruses may present similarly and require the same precautions.<\/p>\nWhat to do after receiving the result? Next steps and medical consultation<\/h2>\n
After receiving your combo test result for flu, COVID-19, and RSV, the key is calm, orderly action according to a clear plan that respects both result interpretation and your current state of health and any chronic illnesses. First, be sure the result was correctly read: the control line (C) must be visible\u2014otherwise the test is invalid and should be repeated the same day, following the manufacturer\u2019s instructions to the letter. If all virus lines (e.g. for flu A\/B, SARS-CoV-2, RSV) are negative and symptoms are mild\u2014cough, low-grade fever, runny nose, sore throat\u2014you can generally stay home, ensure hydration, rest, take symptomatic medications (e.g., antipyretic, painkillers), and observe your health for 24\u201348 hours. Remember, a negative result does not fully exclude infection\u2014especially if the test was done very early (first day of symptoms) or the swab may not have been properly collected. Therefore, if despite a negative result you develop high fever, severe shortness of breath, chest pain, marked weakness, or signs of dehydration, contact your doctor or, for sudden deterioration, emergency services (e.g. 112\/999). In high-risk groups\u2014the elderly, those with heart, lung, diabetes, obesity, undergoing chemotherapy, or pregnant women\u2014even mild symptoms with a negative result should prompt quicker medical consultation, as the doctor may advise re-testing, RT-PCR, or other assessments (e.g., morphology, CRP<\/a>, chest X-ray) to clarify the cause. If you have a positive result for any of the viruses, the most important thing is to immediately limit contact with others, especially the vulnerable\u2014seniors, infants, immunocompromised\u2014by staying home, wearing a mask if you absolutely must see someone, frequent hand washing and disinfecting, ventilating rooms, and using separate towels and dishes. Regardless of whether flu, COVID-19, or RSV is confirmed, refrain from work, school, nursery, or group activities to avoid spreading infection. Upon a positive result, notify your primary care doctor or clinic by phone, especially if you are in any risk groups or symptoms are moderate or severe. The doctor, taking into account age, comorbidities, and symptom duration, may consider starting targeted antiviral treatment (e.g., for flu in high-risk patients early therapy within 48 hours is crucial), recommend home oxygen saturation monitoring, and issue a medical certificate or refer for further diagnostics. If the test shows coinfection (e.g., both flu and SARS-CoV-2), an urgent consultation is needed, ideally on the same day, as the risk of a severe course is then higher and the doctor may arrange for closer monitoring and quicker hospital referral if disturbing changes develop. Make sure to provide the doctor with all pertinent information: onset date of symptoms, temperature trends, presence of shortness of breath, appetite and hydration, chronic medication list, and what drugs you have already taken for the infection\u2014this greatly helps with assessment and optimal management.<\/p>\nA crucial part after receiving the result is also responsibly informing people with whom you had close contact during the most contagious period\u2014usually from 1\u20132 days before symptom onset to several days after\u2014especially if this includes people vulnerable to severe complications. You do not need to provide official medical documents, but it is advisable to inform them about confirmed infection with one of the respiratory viruses so they can monitor their health, limit wider contact, and consider doctor consultation if symptoms appear. If your result is positive and you feel relatively well, you can use telehealth\u2014prepare a photo of the test (with clear control and test lines), a list of symptoms and onset dates, and your medication list. The doctor will explain current isolation guidelines, when you may return to work or school, how long you are considered potentially infectious, and when to seek medical attention without delay (e.g., worsening shortness of breath, saturation drop below the doctor\u2019s set value, confusion, unexplained bruises, severe chest pain). If test results are unclear (faint line, uncertainty about timing) or drastically diverge from the clinical picture\u2014e.g., severe symptoms with a \u201cclear\u201d test\u2014do not self-diagnose or self-medicate with antibiotics unless directed. Antibiotics do not work on viruses, and unnecessary use raises risks of side effects and bacterial resistance. Instead, consult your doctor, who may order more thorough molecular tests, assess possible bacterial superinfection, and recommend appropriate treatment. If you had your test in a medical facility, ask whether the result will be entered into electronic systems, whether you need documentation for employer or school, and what the local policy is for returning to activity after infection. For children, a positive result for RSV or flu should prompt especially vigilant monitoring: check respiratory rate, intercostal retractions, feeding difficulties, or dehydration signs (dry tongue, less urine, apathy) and contact your pediatrician or emergency care quickly if any concerns arise. Throughout the infection monitor body temperature, maintain hydration and easy-to-digest meals, avoid strenuous exercise, and do not rush back to work or sports until full recovery to avoid overloading a body weakened by the virus. Correct action after getting the result\u2014be it positive, negative, or doubtful\u2014helps protect your health and that of those around you, while close cooperation with your doctor increases the chance of a milder course and quicker recovery.<\/p>\n
Summary<\/h2>\n
The combo test for flu, COVID-19, and RSV is an effective tool for rapid diagnosis, especially when infection symptoms overlap. It allows for simultaneous detection of the most common respiratory viruses within 15 minutes, enabling quick response and initiation of appropriate treatment. Understanding the test procedure, correct reading, and interpretation of results ensures comfort and safety for home diagnostics. If the result is positive, always contact your doctor to confirm the diagnosis and establish further steps.<\/p>\n","protected":false},"excerpt":{"rendered":"
The combo test for flu, COVID-19, and RSV allows for quick verification of which virus is causing the infection. Learn how and when to perform the test and how to interpret the result.<\/p>\n","protected":false},"author":6,"featured_media":15596,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","rank_math_title":"Combo test for flu COVID-19 and RSV \u2013 performance and result","rank_math_description":"Learn how to perform the combo test and interpret the results for influenza, COVID-19, and RSV infections. Check out the details!","rank_math_focus_keyword":"combo test","rank_math_canonical_url":"https:\/\/najzdrowie.pl\/en\/test-combo-for-flu-covid-19-i-rsv\/","rank_math_robots":null,"rank_math_schema":"","rank_math_primary_category":null,"footnotes":""},"categories":[1066],"tags":[6602,700,698,703,5874,1967,4411,2976],"class_list":["post-15600","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-diseases","tag-benefits-of-ultrasound","tag-communicable-diseases","tag-coronavirus","tag-covid-19-en","tag-flu","tag-research","tag-self-expression","tag-viral-infections"],"_links":{"self":[{"href":"https:\/\/najzdrowie.pl\/en\/wp-json\/wp\/v2\/posts\/15600","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/najzdrowie.pl\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/najzdrowie.pl\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/najzdrowie.pl\/en\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/najzdrowie.pl\/en\/wp-json\/wp\/v2\/comments?post=15600"}],"version-history":[{"count":0,"href":"https:\/\/najzdrowie.pl\/en\/wp-json\/wp\/v2\/posts\/15600\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/najzdrowie.pl\/en\/wp-json\/wp\/v2\/media\/15596"}],"wp:attachment":[{"href":"https:\/\/najzdrowie.pl\/en\/wp-json\/wp\/v2\/media?parent=15600"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/najzdrowie.pl\/en\/wp-json\/wp\/v2\/categories?post=15600"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/najzdrowie.pl\/en\/wp-json\/wp\/v2\/tags?post=15600"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
What is the combo test for flu, COVID-19, and RSV?<\/h2>\n
The combo test for flu, COVID-19, and RSV is a simultaneous examination targeting the three most common viral causes of acute respiratory tract infection: types A and B influenza virus<\/a>, SARS\u2011CoV\u20112 (responsible for COVID\u201119), and RSV (respiratory syncytial virus). In practice, this means that with a single sample \u2014 most often a nasal or nasopharyngeal swab \u2014 you can determine which of these pathogens is causing symptoms such as fever, cough, runny nose, sore throat, muscle aches, or shortness of breath. Depending on the technology used, two main types of combo tests are distinguished: rapid antigen tests and more accurate molecular tests (RT\u2011PCR or other nucleic acid amplification methods). Antigen tests detect specific viral proteins (antigens) present in respiratory secretions, providing results usually within several to tens of minutes, often immediately at a family doctor’s office, clinic, or swab point. Molecular tests search for the virus’s genetic material (RNA), offering higher sensitivity and specificity but requiring specialized lab equipment and longer waiting times for results (generally from several hours up to 1\u20132 days). Regardless of the method, the combo test aims for quick diagnostic narrowing and identification of the specific cause, which in many cases allows for appropriate treatment decisions (e.g., initiating antiviral drugs for flu), necessity of isolation, monitoring risk of complications, or tailoring further diagnostics. From a patient\u2019s perspective, the most important advantage is that instead of undergoing three separate tests \u2014 individually for flu, COVID\u201119, and RSV \u2014 just one sample is required, which is more convenient, less stressful (especially for children and the elderly), and often more economical. Combo tests are increasingly recommended during infection seasons, when several different viruses circulate simultaneously in the population, and clinical symptoms alone cannot reliably differentiate between flu, COVID\u201119, or RSV infection. For doctors, they are a valuable tool supporting decision-making, reducing the risk of unnecessary antibiotic use, and helping in patient triage in hospitals (e.g., proper placement in isolation rooms, assessment of severe course risk).<\/p>\n Technically, a combo test is designed to include several separate reaction pathways in a single diagnostic “panel”\u2014each responsible for detecting a different virus. For antigen tests, this usually manifests as several separate lines on the test cassette: one control line (C), confirming the test was performed correctly, and three test lines (typically for flu, SARS\u2011CoV\u20112, and RSV). In molecular tests, different primers and probes are used in the same amplification reaction cycle, each targeting RNA fragments for the respective viruses, enabling their simultaneous detection from a single sample. Modern panels can additionally detect flu subtypes (e.g., A\/H1N1, A\/H3N2) or distinguish between flu A and B, which is epidemiologically and clinically relevant. Combo tests are particularly useful because the clinical picture of infection with these viruses significantly overlaps, especially at the outset of illness\u2014both flu, COVID\u201119, and RSV infection can present with high fever, malaise, cough, headache, runny nose, and in some patients, also shortness of breath or wheezing. Based on symptoms alone, even experienced doctors often cannot clearly differentiate which virus is responsible, which affects therapy choice, isolation period, and guidelines for household members and contacts. That is why the combo test has become an important diagnostic tool during the autumn-winter season and periods of increased incidence, especially for high-risk groups (seniors, pregnant women, people with chronic diseases, infants, and young children). It should also be noted that the choice of a specific level of combo test (antigen or molecular) depends on the examination purpose, local facility availability, general epidemiological situation, and the patient’s condition\u2014in certain clinical situations, e.g., hospitalized patients, more sensitive molecular tests are preferred, while in primary care or in Emergency Departments, rapid antigen tests are often used to enable immediate therapeutic and organizational decisions.<\/p>\n The combo test for flu, COVID-19, and RSV has been designed to provide as much key information as possible about the cause of a respiratory infection in the shortest time possible, with straightforward testing procedure. Most antigen combo tests available on the market work based on the same lateral flow immunochromatography technology also used in pregnancy tests. The process begins by collecting a sample\u2014usually a swab from the front part of the nose or from the nasopharynx. A healthcare professional or trained diagnostician inserts a special swab into the nose to a specified depth, gently rotates it for several seconds, and then places the collected material in a tube with extraction buffer. This fluid \u201cwashes out\u201d viral antigens from the surface of epithelial cells\u2014if influenza, SARS-CoV-2, or RSV viral particles are present, their characteristic proteins enter the solution. Then, a few drops of the prepared sample are applied to a special test window on the cassette. The liquid moves across the test membrane by capillary action. Antibodies embedded in the test, specific for each virus’s antigens, are pre-applied in designated zones\u2014each for a separate pathogen (one line for flu, another for COVID-19, another for RSV), plus a control line. If antigens of a given virus are present in the sample, they bind to dye-labeled antibodies, forming complexes which are \u2018captured\u2019 on the appropriate test line. As a result, after a short time of several minutes, one or more colored stripes appear in the test window, indicating which virus has been detected; the control line demonstrates that the test worked properly\u2014its absence indicates a technical error or testing problem. Owing to this simple but meticulously developed immunological reaction, rapid diagnosis \u201cat the patient’s bedside\u201d (point-of-care) is possible without sending samples to a laboratory\u2014the result is usually available 10 to 15 minutes after applying the sample to the cassette. The combo test is generally calibrated to detect relatively high antigen concentrations for a rapid response and to minimize cross-reactions with other seasonal pathogens.<\/p>\n In clinical practice, the combo test works as a rapid triage tool, and its diagnostic effectiveness depends on several factors: quality of swab sampling, time of testing relative to symptom onset, and correct result interpretation. The highest viral antigen concentrations in the respiratory tract occur in the first days of infection; therefore, a combo test is most effective when performed within 3\u20135 days of appearance of fever<\/a>, cough, sore throat, or runny nose; for children or severe courses, the \u201cdiagnostic window\u201d may be slightly longer. Technically, after sample application, the patient or personnel should time as specified in the instructions (e.g., 15 minutes) and only then read the lines\u2014the result may be inaccurate if read too early or too late. Depending on the manufacturer, the combo test may detect both single infection (e.g. flu only) and mixed infection (coinfection), when two or even all three viruses are active simultaneously in one patient. For doctors, this is important, since coinfections can be more severe and influence decisions about therapy, isolation, and monitoring differently than single infections. Compared to classic RT-PCR, antigen combo tests are mainly distinguished by speed and accessibility\u2014they don’t require complex equipment or a laboratory, so they can be used at a family physician\u2019s office, ER, nursing homes, and even in mobile settings. Sensitivity is generally lower than molecular methods, so in people at high risk of severe disease or with atypical clinical presentations, confirmation with RT-PCR may be warranted. On an organizational level, the ability to detect three different viruses from one sample greatly simplifies staff workflow: shortens patient contact, reduces material consumption, and enables rapid decisions about isolation and antiviral therapy. That\u2019s why the combo test is an important diagnostic part of autumn-winter strategies, when many respiratory infections overlap and it\u2019s hard to \u201ceyeball\u201d whether you\u2019re dealing with flu, COVID-19, or RSV.<\/p>\n The combo test for flu, COVID-19, and RSV is particularly advisable when acute respiratory symptoms appear and it is initially unclear which virus may be responsible. Typical symptoms include: sudden fever or low-grade fever, chills, muscle and joint aches, severe fatigue, dry or dry<\/a> or productive cough<\/a>, sore throat, runny or blocked nose, headache, and in some patients, shortness of breath or chest tightness. Performing the test is especially important if symptoms appeared recently\u2014usually within the first 5\u20137 days of onset\u2014since viral antigens are then most concentrated in the airways, maximizing test reliability. The combo test is also key if the patient had contact with someone confirmed to be infected (in family, at work, school, nursery) and then develops symptoms\u2014rapid confirmation or exclusion helps prevent further virus spread and supports responsible decisions about isolation or return to work. Particularly low \u201ctesting threshold\u201d for the combo test is recommended for people at high risk for severe disease: seniors (usually over 60\u201365 years old), people with chronic illnesses (e.g. heart, lung, kidney, liver disease, diabetes, obesity), immunocompromised (post-transplant, cancer treatment, on immunosuppressants), and pregnant women. In these patients, early determination of whether symptoms are due to flu, SARS-CoV\u20112, or RSV can enable prompt appropriate therapy (antiviral drugs or oxygen) and reduce risk of complications, hospitalization, or intensive care. The combo test is also worth considering in small children, especially under 2 years of age, who are more prone to severe RSV or flu; in infants, even apparently \u201cordinary\u201d runny nose may progress quickly to bronchiolitis or pneumonia, so when there is a sudden deterioration, rapid breathing, feeding difficulties, or high fever, a doctor often orders this test to better assess and plan further management.<\/p>\n A combo test is also justified for organizational or epidemiological reasons, when result drives decisions about isolation, quarantine, or clearance for work and care of others. This applies to, for example, healthcare workers, nursing home caregivers, teachers, nursery and preschool staff, and other people in frequent contact with high-risk groups. For them, rapid discrimination between flu, COVID\u201119, and RSV supports better staffing management, limits spread within the facility, and protects clients and residents. The test is also useful if a patient is scheduled for surgery, hospitalization, rehabilitation, or spa stay\u2014onset of symptoms just before admission may require swift diagnostics so as not to expose other patients to infection, but also to avoid unnecessary withdrawal if the test rules out current infection with major viruses. In autumn-winter, as several pathogens circulate, the combo test should be considered a key tool for differentiating symptoms, especially in those falling ill despite vaccination for flu or COVID\u201119<\/a>\u2014because infection is still possible post-vaccination, but knowing the specific virus helps predict disease course, risk of complications, and choose optimal symptomatic and antiviral therapy. Finally, a combo test can help in life decisions: before visiting very elderly parents or grandparents, before attending major family events with children and chronically ill people, or before foreign travel if regulations of the carrier, hotel, or destination still mandate epidemiological safety rules. In such cases, doing the test with even mild symptoms or after recent exposure helps make an informed decision about the safety of travel or a meeting and reduces risk of unknowingly transmitting the virus to the most vulnerable. Although the final decision is best made in consultation with a doctor, the patient should remember that time is crucial\u2014the earlier the test is performed, the more reliable the outcome and the greater the chance for prompt, targeted medical management.<\/p>\n Performing a home combo test for flu, COVID-19, and RSV primarily requires carefully reading the manufacturer\u2019s instructions, as each test may differ in details and procedure. Before you start, prepare a clean, well-lit work surface, wash your hands with warm soapy water or disinfect them with an alcohol-based gel, and make sure the test package is undamaged and not expired\u2014the expiry date has a direct impact on test reliability. The kit usually includes: a test cassette (or test card), swab, tube with buffer\/extraction solution, a dropper or dripper tip, and instructions. The test should not be performed immediately after eating, drinking, chewing gum, or smoking if the manufacturer notes such a warning\u2014wait at least 15\u201330 minutes. Before opening anything, make sure you have a timer or watch\u2014the correct incubation time measurement is crucial. Once you remove the test cassette from its foil package, place it flat on the table, avoiding touching the readout or reaction areas. Next, prepare the solution: in most kits, simply pour the buffer into the tube or gently squeeze the bottle to make the fluid flow out; if unclear, always follow the booklet\u2019s graphical scheme. Do not mix parts from different kits, do not reuse the swab or tube, and do not open the cassette too early\u2014do so right before you collect the sample. If testing a child, calmly explain what will happen, show the swab, and warn them that there may be a brief discomfort in the nose; another person may gently hold the child\u2019s head to minimize movement during sampling. Also ensure biological safety: sneezing or coughing while sampling can spread germs, so wear a mask and disposable gloves, especially if testing someone else.<\/p>\n The actual process of nasal swab sampling is crucial for the test\u2019s sensitivity. Most manufacturers recommend sampling from the anterior part of the nose (anterior nares), less invasive than a classic nasopharyngeal swab but still providing good material if the technique is correct. Gently blow your nose (or have the child do so if possible), then insert the swab into one nostril\u2014slowly, parallel to the palate, about 1.5\u20132 cm deep in adults (a bit shallower in small children, per the instructions). When you feel slight resistance, rotate the swab a few times (usually 4\u20135), making sure its tip touches the sides, then gently withdraw and repeat in the other nostril using the same swab\u2014this is important because material from both sides increases the chance of virus detection. After sampling, put the swab tip in the buffer tube, press it against the wall and twist or squeeze the tube several times to thoroughly wash the biological material into solution; some instructions call for leaving the swab in the fluid for a set number of seconds, others for removing and discarding it after mixing\u2014so following the exact directions is crucial. Next, cap the tube or put on the dropper, gently shake, and apply the specified number of drops (usually 3\u20134) to the proper window on the test cassette, marked as “S” (sample). Set the timer for the incubation time shown in the leaflet\u2014usually 10\u201315 minutes\u2014do not move or disturb the cassette, and do not exceed the upper readout limit, as a result read too late may be falsely positive or unreadable. The control line (C) should appear first while waiting; its absence means the test was invalid or the kit is faulty. The test lines for each virus (e.g., “Flu A”, “Flu B”, “COVID-19”, “RSV”) may differ in intensity\u2014even a pale but visible line is typically interpreted as positive per instructions. After reading the result, all used items (swab, tube, cassette, gloves) should be placed in a plastic bag, sealed, and thrown into general waste, and then hands should be washed or disinfected again. If the result is unclear, inconsistent with the clinical picture (e.g., severe symptoms with negative test), or you have trouble interpreting faint lines, contact your doctor and possibly confirm with another laboratory method (e.g. RT-PCR).<\/p>\n The result of a combo test for flu, COVID-19, and RSV should always be interpreted in the context of symptoms, their duration, and the patient\u2019s general health status. The test cassette usually has four reading fields\u2014one control (C) and three for the respective pathogens, usually described as FLU (sometimes separated into flu A and B), COVID-19 (SARS-CoV-2), and RSV. The appearance of a clear line in the C field means the test was correctly performed and the result can be considered reliable; absence of this line means the test is invalid, regardless of other strips. A negative result for all three viruses (only the C line is visible) suggests that the tested antigens were not detected in the sample at test time, which most often means no active infection with flu, COVID-19, or RSV. However, this does not rule out infection with other viruses or bacteria, nor does it rule out very early or late stages of infection when antigen concentration may be too low for detection. If symptoms are severe, persist, or worsen despite a negative result, a doctor\u2019s consultation is advised, with possible repeat testing, a PCR test, or additional diagnostics. A positive result for any single virus means its antigen was detected, usually indicating active infection. For example, a line in the COVID-19 field along with the control line indicates SARS-CoV-2 infection, with no line for FLU or RSV suggesting those viruses were not detected. Likewise, a positive line at FLU confirms flu and at RSV\u2014RSV infection, which is especially dangerous for small children, premature infants, seniors, and those with chronic illnesses. After receiving a positive result for any pathogen, its clinical context is crucial: the doctor will judge whether antiviral therapy (as in flu), antibiotics for bacterial superinfection, or just observation, hydration, and supportive therapy are needed. Note that the intensity of the test line (fainter or darker) does not directly correspond to \u201cstrength\u201d or severity of infection\u2014even a pale line is treated as positive if within the result readout time specified by the manufacturer.<\/p>\n An especially important case is a multiple positive result, for example, simultaneous lines for FLU and COVID-19 or RSV. Such co-infections are possible, particularly in the autumn-winter season, and may involve a more severe course, especially in high-risk groups. This result requires urgent medical consultation, as hospitalization, more intense monitoring, or the use of multiple therapies at once may be necessary. The doctor will consider the patient\u2019s age, comorbidities (e.g. COPD, asthma<\/a>, diabetes, heart failure), oxygen saturation, respiratory rate, and overall fitness. Also, be aware of possible false positive and false negative outcomes. A false positive may occur due to sample contamination, incorrect readout timing (too long after suggested interval), or technical errors. False negatives most often result when the swab is taken too early (first hours post-symptom onset), too late (after acute phase), not deep enough, or not according to procedure. Therefore, significant symptoms and high probability of contact may prompt the doctor to recommend re-testing after 24\u201348 hours, a more sensitive test (e.g. RT-PCR), or broader blood or imaging tests. Also consider patient vaccination status\u2014someone vaccinated for flu or COVID-19 can still become infected, but courses tend to be milder. The combo test detects virus antigen, not vaccine-induced antibodies, so a positive result means current infection, not just \u201cimmune memory\u201d. Regardless of the result, it is key to follow sanitary-epidemiological recommendations: with a positive result, home isolation is usually required, avoid contact with high-risk persons, and inform your doctor and, if appropriate, your employer. If negative but symptoms persist, remain cautious, stay home until improvement, and monitor health, as other respiratory viruses may present similarly and require the same precautions.<\/p>\n After receiving your combo test result for flu, COVID-19, and RSV, the key is calm, orderly action according to a clear plan that respects both result interpretation and your current state of health and any chronic illnesses. First, be sure the result was correctly read: the control line (C) must be visible\u2014otherwise the test is invalid and should be repeated the same day, following the manufacturer\u2019s instructions to the letter. If all virus lines (e.g. for flu A\/B, SARS-CoV-2, RSV) are negative and symptoms are mild\u2014cough, low-grade fever, runny nose, sore throat\u2014you can generally stay home, ensure hydration, rest, take symptomatic medications (e.g., antipyretic, painkillers), and observe your health for 24\u201348 hours. Remember, a negative result does not fully exclude infection\u2014especially if the test was done very early (first day of symptoms) or the swab may not have been properly collected. Therefore, if despite a negative result you develop high fever, severe shortness of breath, chest pain, marked weakness, or signs of dehydration, contact your doctor or, for sudden deterioration, emergency services (e.g. 112\/999). In high-risk groups\u2014the elderly, those with heart, lung, diabetes, obesity, undergoing chemotherapy, or pregnant women\u2014even mild symptoms with a negative result should prompt quicker medical consultation, as the doctor may advise re-testing, RT-PCR, or other assessments (e.g., morphology, CRP<\/a>, chest X-ray) to clarify the cause. If you have a positive result for any of the viruses, the most important thing is to immediately limit contact with others, especially the vulnerable\u2014seniors, infants, immunocompromised\u2014by staying home, wearing a mask if you absolutely must see someone, frequent hand washing and disinfecting, ventilating rooms, and using separate towels and dishes. Regardless of whether flu, COVID-19, or RSV is confirmed, refrain from work, school, nursery, or group activities to avoid spreading infection. Upon a positive result, notify your primary care doctor or clinic by phone, especially if you are in any risk groups or symptoms are moderate or severe. The doctor, taking into account age, comorbidities, and symptom duration, may consider starting targeted antiviral treatment (e.g., for flu in high-risk patients early therapy within 48 hours is crucial), recommend home oxygen saturation monitoring, and issue a medical certificate or refer for further diagnostics. If the test shows coinfection (e.g., both flu and SARS-CoV-2), an urgent consultation is needed, ideally on the same day, as the risk of a severe course is then higher and the doctor may arrange for closer monitoring and quicker hospital referral if disturbing changes develop. Make sure to provide the doctor with all pertinent information: onset date of symptoms, temperature trends, presence of shortness of breath, appetite and hydration, chronic medication list, and what drugs you have already taken for the infection\u2014this greatly helps with assessment and optimal management.<\/p>\n A crucial part after receiving the result is also responsibly informing people with whom you had close contact during the most contagious period\u2014usually from 1\u20132 days before symptom onset to several days after\u2014especially if this includes people vulnerable to severe complications. You do not need to provide official medical documents, but it is advisable to inform them about confirmed infection with one of the respiratory viruses so they can monitor their health, limit wider contact, and consider doctor consultation if symptoms appear. If your result is positive and you feel relatively well, you can use telehealth\u2014prepare a photo of the test (with clear control and test lines), a list of symptoms and onset dates, and your medication list. The doctor will explain current isolation guidelines, when you may return to work or school, how long you are considered potentially infectious, and when to seek medical attention without delay (e.g., worsening shortness of breath, saturation drop below the doctor\u2019s set value, confusion, unexplained bruises, severe chest pain). If test results are unclear (faint line, uncertainty about timing) or drastically diverge from the clinical picture\u2014e.g., severe symptoms with a \u201cclear\u201d test\u2014do not self-diagnose or self-medicate with antibiotics unless directed. Antibiotics do not work on viruses, and unnecessary use raises risks of side effects and bacterial resistance. Instead, consult your doctor, who may order more thorough molecular tests, assess possible bacterial superinfection, and recommend appropriate treatment. If you had your test in a medical facility, ask whether the result will be entered into electronic systems, whether you need documentation for employer or school, and what the local policy is for returning to activity after infection. For children, a positive result for RSV or flu should prompt especially vigilant monitoring: check respiratory rate, intercostal retractions, feeding difficulties, or dehydration signs (dry tongue, less urine, apathy) and contact your pediatrician or emergency care quickly if any concerns arise. Throughout the infection monitor body temperature, maintain hydration and easy-to-digest meals, avoid strenuous exercise, and do not rush back to work or sports until full recovery to avoid overloading a body weakened by the virus. Correct action after getting the result\u2014be it positive, negative, or doubtful\u2014helps protect your health and that of those around you, while close cooperation with your doctor increases the chance of a milder course and quicker recovery.<\/p>\n The combo test for flu, COVID-19, and RSV is an effective tool for rapid diagnosis, especially when infection symptoms overlap. It allows for simultaneous detection of the most common respiratory viruses within 15 minutes, enabling quick response and initiation of appropriate treatment. Understanding the test procedure, correct reading, and interpretation of results ensures comfort and safety for home diagnostics. If the result is positive, always contact your doctor to confirm the diagnosis and establish further steps.<\/p>\n","protected":false},"excerpt":{"rendered":" The combo test for flu, COVID-19, and RSV allows for quick verification of which virus is causing the infection. Learn how and when to perform the test and how to interpret the result.<\/p>\n","protected":false},"author":6,"featured_media":15596,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","rank_math_title":"Combo test for flu COVID-19 and RSV \u2013 performance and result","rank_math_description":"Learn how to perform the combo test and interpret the results for influenza, COVID-19, and RSV infections. Check out the details!","rank_math_focus_keyword":"combo test","rank_math_canonical_url":"https:\/\/najzdrowie.pl\/en\/test-combo-for-flu-covid-19-i-rsv\/","rank_math_robots":null,"rank_math_schema":"","rank_math_primary_category":null,"footnotes":""},"categories":[1066],"tags":[6602,700,698,703,5874,1967,4411,2976],"class_list":["post-15600","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-diseases","tag-benefits-of-ultrasound","tag-communicable-diseases","tag-coronavirus","tag-covid-19-en","tag-flu","tag-research","tag-self-expression","tag-viral-infections"],"_links":{"self":[{"href":"https:\/\/najzdrowie.pl\/en\/wp-json\/wp\/v2\/posts\/15600","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/najzdrowie.pl\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/najzdrowie.pl\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/najzdrowie.pl\/en\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/najzdrowie.pl\/en\/wp-json\/wp\/v2\/comments?post=15600"}],"version-history":[{"count":0,"href":"https:\/\/najzdrowie.pl\/en\/wp-json\/wp\/v2\/posts\/15600\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/najzdrowie.pl\/en\/wp-json\/wp\/v2\/media\/15596"}],"wp:attachment":[{"href":"https:\/\/najzdrowie.pl\/en\/wp-json\/wp\/v2\/media?parent=15600"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/najzdrowie.pl\/en\/wp-json\/wp\/v2\/categories?post=15600"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/najzdrowie.pl\/en\/wp-json\/wp\/v2\/tags?post=15600"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}How does the combo test work? \u2013 Quick diagnosis in 15 minutes<\/h2>\n
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\n<\/a><\/p>\nWhen is it worth performing a combo test?<\/h2>\n
How to properly perform a combo test at home?<\/h2>\n
Interpretation of combo test results for flu, COVID-19, and RSV<\/h2>\n
What to do after receiving the result? Next steps and medical consultation<\/h2>\n
Summary<\/h2>\n