SARS-CoV-2 Antigen (Qualitative) in Nasopharyngeal Swab

How the Test Works

The test uses a swab to collect a sample from your upper nasal passage. The swab is then analyzed to detect specific viral proteins that indicate an active COVID-19 infection. This is done through a rapid immunoassay method that produces results in about 15 minutes.

What to Expect Before the Test

No special preparation is needed. You may have a slight discomfort from the swab insertion, but it usually lasts only a few seconds. Avoid using nasal decongestants or sprays before testing, as they may affect results.

What the Results Mean

A **positive result** means the test detected the virus’s protein and suggests you may have an active COVID-19 infection. Follow your healthcare provider’s guidance on next steps, such as isolating or seeking further medical care. A **negative result** means the test did not detect the virus at this time, but you may still be infected if symptoms develop later.

When You Might Need This Test

This test is often used for rapid screening in high-risk settings, such as healthcare facilities, community events, or when symptoms of COVID-19 are suspected. It is not typically used for monitoring long-term infection status.