What is a Flu (Influenza) Test?
Flu tests, sometimes called influenza tests, are diagnostic examinations to determine if a person is infected with an influenza virus.
People with respiratory issues undergo flu tests to determine if a flu virus causes their respiratory infection. Respiratory issues share symptoms like coughs (sometimes severe), runny or stuffy noses, and sore throat. There are different kinds of flu tests, but the most common types of flu tests are the following:
Rapid influenza diagnostic tests (RIDTs)
These are sometimes called rapid influenza antigen tests (not to be confused with the kind meant for detecting COVID-19, but some test kits account for both flu and COVID-19) A rapid flu test is a nasal or throat swab test, and it involves getting a sample from the nostrils or the upper part of the throat. It produces results quickly, usually between ten to thirty minutes. It can even be self-administered.
Please note that rapid tests can yield false negative results, especially if not done correctly. Also, these tests only detect Influenza A and B.
Reverse transcription-polymerase chain reaction (RT-PCR)
This test involves getting a sample from the nostril and/or mouth. However, it'll be performed by a healthcare professional. They will take the sample and analyze it in the lab to check for influenza. Getting results for this may take a couple of hours or even a day after the test.










