Influenza Nucleic Acid Detection by Nasopharyngeal Probe (Qualitative)

How the Test Works

The test uses a swab inserted into your nose to collect a sample of nasal fluid. This sample is then analyzed to detect the genetic material (nucleic acid) of the influenza virus. If the virus is present, the test will confirm it, even if you’re in the early stages of illness.

What to Expect Before the Test

No special preparation is needed. You may experience mild discomfort from the swab, but it usually takes just a few seconds. If you have a cold or sinus congestion, it may be slightly more uncomfortable, but the test is still safe and effective.

When This Test Is Used

Doctors may recommend this test if you have flu-like symptoms (fever, cough, sore throat, fatigue) or if you’re at higher risk for complications from the flu (e.g., young children, elderly adults, or those with chronic health conditions). It’s also used in outbreaks or during flu season to monitor spread.

What the Results Mean

A positive result means the test detected the influenza virus in your sample. This confirms you likely have the flu and may need antiviral medication. A negative result means the virus wasn’t found in this sample, but flu symptoms could still be from another illness or may appear later. Follow-up testing may be needed if symptoms persist.