CorDx Tyfast SARS-CoV-2/Flu A+B Rapid Antigen Point-of-Care Test is a lateral flow immunoassay intended for in vitro rapid, simultaneous qualitative detection and differentiation of nucleocapsid antigen from SARS-CoV-2, influenza A and influenza B directly from anterior nasal swab specimens obtained from patients who are suspected of COVID-19 by their healthcare provider, within the first five days of onset of symptoms.