The SARS-CoV-2 and Influenza A+B Antigen Combo Rapid Test is a lateral flow immunoassay designed for the qualitative detection of nucleocapsid protein antigens from SARS-CoV-2, Influenza A, and Influenza B in human nasal swab specimens. This single-use test enables simultaneous screening for COVID-19 and influenza viruses, helping healthcare providers and individuals quickly differentiate between infections with overlapping symptoms.