COVID-19 Ag & Flu A/B Combo Self Test is a colloidal gold immunochromatography intended for the in vitro rapid, simultaneous qualitative detection and differentiation of N protein from SARS-CoV-2, influenza A and influenza B directly from nasal swab specimens obtained from individuals, who are suspected of COVID-19, influenza A or influenza B infection. Results are for the simultaneous identification of N protein of SARS-CoV-2, influenza A and influenza B.