Influenza Virus A & B Antigen, Throat Swab
This rapid test detects influenza A and B antigens from a throat swab specimen. It offers quick results to support clinical decision-making during respiratory illness outbreaks.
6 hours
Turnaround
Swab
Sample
What the Influenza Virus A & B Antigen, Throat Swab test tells you
Influenza A and B antigen testing on a throat swab looks for proteins that sit on the surface of the influenza virus. A swab is passed over the back of the throat and the tonsil area, and the material collected is exposed to antibodies that bind only to influenza proteins. Nothing is grown and no genetic material is copied, which is why this format is chosen when an answer during the same visit is more useful than the most sensitive method available.
The throat is a compromise sampling site. The nasopharynx, high up behind the nose, usually holds more influenza virus, so a nasal specimen tends to detect infection more reliably. A throat swab is easier to tolerate, which matters for children, for people with nosebleeds or recent nasal surgery, and for anyone who cannot stay still for deeper sampling. Because the test depends on there being enough viral protein on the swab, timing matters a great deal: shedding is at its heaviest in the first days of illness and falls away afterwards, so a specimen taken late can read negative even when influenza was the cause.
A positive result is meaningful and is usually accepted at face value during the influenza season, since the test rarely reacts to anything else. A negative result is weaker evidence and has to be read alongside your symptoms, the time of year and what is circulating locally. Your doctor may treat the illness as influenza regardless, or send a molecular test that copies viral genetic material and so detects far smaller amounts of virus. Knowing whether influenza A or influenza B is present also helps with sensible precautions at home, at work and around vulnerable relatives.
Used when influenza is suspected and a throat specimen is preferred, particularly during flu outbreaks or when nasal collection is not feasible.
Antigen detection needs no culture step, so the result can inform decisions while the illness is still in its early phase.
Fever, aches and cough have many causes. Identifying influenza narrows the list and reduces guesswork about whether antibiotics are needed.
Antiviral medicines work best when started early. A confirmed influenza result helps your doctor decide quickly whether they are appropriate for you.
Confirmed influenza is a reason to keep distance from infants, pregnant women, older relatives and anyone with weakened immunity.
Reasons your doctor may request the Influenza Virus A & B Antigen, Throat Swab test
Your doctor may order this test for any of the reasons below. Some are routine checks, others follow specific symptoms or an earlier result.
Sudden flu-like illness
Sudden fever, muscle aches, headache and dry cough during the influenza season.
Sore throat with fever where nasal sampling is not tolerated or not possible.
Higher-risk groups
Respiratory symptoms in someone with asthma, chronic lung disease, heart disease or diabetes.
Illness in a person who lives with or cares for an infant, an elderly relative or an immunocompromised patient.
Outbreaks & clusters
A cluster of similar respiratory illness in a household, school or workplace.
No fasting window — pick any slot that suits you, online or on WhatsApp.
A DHA-licensed nurse collects your sample at home or in the office — free home collection.
A physician-reviewed, easy-to-read report lands securely by WhatsApp and email.
A rapid antigen test for influenza A and B.
Influenza Virus A & B Antigen, Throat Swab
A rapid antigen test for influenza A and B.
The target was not detected — a negative result.
The target was detected — a positive result. Please consult your physician.
This test is reported descriptively rather than on a numeric scale — each finding below explains what your report may say.
This information is for general education only and is not medical advice. Reference ranges can vary by laboratory, age, sex, and individual factors. Always consult your physician or doctor to interpret your results.
What a higher result can point to
- Active influenza A infection while the virus is still being shed from the throat.
- Active influenza B infection, which is seen often in children and younger adults.
- Recent influenza that is settling but is still shedding detectable viral protein.
- Recent vaccination with a live attenuated influenza vaccine given into the nose, which can leave detectable viral antigen for a short period.
- Influenza occurring alongside another respiratory infection, so the result is true but is not necessarily the whole story.
These are possibilities, not diagnoses. A single value outside the reference range is interpreted alongside your symptoms, history and other tests — your doctor decides what it means for you.
What this test cannot tell you
- A negative result does not rule out influenza, particularly when the swab is taken very early or several days into the illness.
- Throat specimens usually recover less virus than nasopharyngeal specimens, so this format detects fewer true infections than a molecular test.
- The test reports the influenza type but not the strain, and says nothing about whether the virus will respond to antiviral medicines.
- Other respiratory viruses and bacteria are invisible to this test, so a broader panel is needed when the cause remains unclear.
Risks of the blood draw
- Mild bruising or brief soreness where the needle went in.
- Occasional lightheadedness, which settles after a few minutes of rest.
- Bleeding or infection at the site, which is rare with sterile single-use equipment.
- 1A positive result is strong evidence of influenza infection at the moment of sampling.
- 2A negative result is not proof that you do not have influenza and is read together with your symptoms.
- 3Sampling within the first few days of symptoms gives the best chance of detection.
- 4The result separates influenza A from influenza B but not the specific circulating strain.
- 5Treatment decisions rest with your doctor, who weighs the result against the whole clinical picture.
Frequently Asked Questions
Everything you need to know about the Influenza Virus A & B Antigen, Throat Swab test. Can't find what you're looking for?
Talk to our team→Yes. The test needs a certain amount of viral protein on the swab before it will react, and that amount is not always present, especially in the first hours of illness or once shedding has faded. Your doctor may still treat the illness as influenza on clinical grounds, or arrange a molecular test that picks up much smaller quantities of virus.
Both cause the same broad illness and are managed in much the same way, so the distinction rarely changes your treatment. It does matter for tracking what is circulating in the community, and it can be useful when several people in one household or workplace fall ill at the same time.
Not directly. The test confirms that influenza protein was present on the swab, not how much virus you are shedding or how long you will remain contagious. In general people are most infectious around the onset of symptoms and in the days that follow, and your doctor can advise when returning to work or school is reasonable.
An injected influenza vaccine contains no live virus and will not cause a positive result. A live attenuated vaccine sprayed into the nose can leave detectable viral protein in the upper airway for a short time afterwards, so mention any recent vaccination when the sample is taken.
This rapid test detects influenza A and B antigens from a throat swab specimen. It offers quick results to support clinical decision-making during respiratory illness outbreaks.
Used when influenza is suspected and a throat specimen is preferred, particularly during flu outbreaks or when nasal collection is not feasible.
No, fasting is not required for the Flu A & B Antigen (Throat) test, so you can eat and drink normally beforehand.
The Flu A & B Antigen (Throat) test uses a swab sample, collected quickly by our DHA-licensed phlebotomist with minimal discomfort.
Results for the Flu A & B Antigen (Throat) test are typically ready within 6 hours. You will receive a secure digital report, and your Smart Report highlights anything outside the normal range.
The Flu A & B Antigen (Throat) test is AED 170, which includes free home sample collection and a physician-reviewed report. You can also build a custom panel and pay only for the markers you choose.
Yes. A DHA-licensed phlebotomist can collect your sample at home or the office anywhere in Dubai at no extra cost, 7 days a week. See how it works.
It is commonly chosen by all ages. If you are not sure it is right for you, our care team is happy to advise.
Add the Flu A & B Antigen (Throat) test to your cart and complete the short booking wizard, choosing home collection or a lab visit. Guest checkout lets you book without creating an account.
Yes. It is processed at our EIAC-accredited laboratory (ISO 15189:2022) under DHA license 0046381 and verified by board-certified pathologists.
Every report includes reference ranges and plain-language notes. If you have questions, our care team can arrange a clinician review — just get in touch.
Absolutely. Add it to a curated health package or bundle it with any of our 160+ biomarkers, often from a single sample in one visit.