Use

This test is a rapid, qualitative immunoassay that detects antigens associated with both viable and nonviable influenza A and B viruses, differentiating between types A and B but not subtypes. It is intended for use with nasal washes or swabs and throat swabs. It has not been validated for monitoring antiviral therapy. The test's sensitivity in manufacturer studies ranged from 37% to 100%, and specificity ranged from 40% to 100%, although more sensitive and specific methods may be available. A positive result indicates detection of influenza A and/or B antigen, which may or may not correlate with clinical symptoms and does not exclude coinfection with other pathogens.