The Influenza Antigen Rapid Test is an in vitro immunochromatographic assay for the qualitative detection of influenza A (including the subtype H1N1) and/or B nucleoprotein antigens in nasopharyngeal (NP) swab, nasal swab, and nasal wash/aspirate specimens. It is intended to aid in the rapid differential diagnosis of influenza A and/or B viral infections.