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Choose collection locationMicrobiology & PCR · Individual laboratory test
This entry is the throat-swab version of the influenza A and B antigen test. The specimen site matters when matching a test to a referral.
Clinical authorDr Nirupama SabhapathySpecialist Clinical Pathology
Understanding the test
Also called Flu A & B Antigen (Throat)
A throat swab may be requested for this influenza antigen method. It addresses influenza A and B specifically, rather than the wider range of respiratory viruses.
This order specifies a throat swab for influenza A and B antigens.
Sampling site and illness stage can influence whether antigen is detected.
Before your sample
No fast is needed. Follow the laboratory's instructions on mouthwash, gargles and throat sprays before the swab and give the time symptoms began.
A clinician takes a throat swab for this order. Tell them about recent treatment and when your symptoms began.
Smart Report
24 hoursLaboratory turnaround
The report relates to antigen recovered from the throat swab. Sampling time and clinical findings influence whether a negative result needs molecular follow-up.
From sample to follow-up

Choose your location, add the test to your care bag and select a time. If you are booking for someone else, assign the test to them in checkout.
Choose collection locationLook for Influenza Virus A & B Antigen, Throat Swab in your report. Use the sample type and collection time when comparing it with an earlier report.
Explore Smart Report
Identify the sample as a throat swab when discussing the result, especially if it differs from another respiratory test.
Patient questions
Confirm the specimen requested with the care team. Test performance depends in part on the type of specimen and the timing of sampling.
Within the first few days of symptoms, when the amount of virus in the throat is at its highest. A swab taken very early in the illness, or several days in once shedding has faded, is more likely to read Not Detected even when influenza is the cause, so tell your doctor when your symptoms started.
Accuracy depends on which swabs the particular test accepts and how soon after symptoms the sample is taken. A negative rapid antigen result can miss flu, especially when flu is widespread. A positive result is harder to interpret when little flu is circulating. Your clinician may request a molecular test if confirmation changes care.
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Written by Dr Nirupama Sabhapathy, Specialist Clinical Pathology. Medically reviewed by Dr Joyce Jose, Specialist Clinical Pathology, on .
Catalogue information and AED price checked on 2 November 2026. Clinical suitability, preparation, collection arrangements and turnaround are confirmed for your selected test.