STANDARD F COVID-19 Ag FIA is the fl uorescent immunoassay for the qualitative detection of specific nucleoprotein antigens to SARS-CoV-2 present in human nasopharynx. STANDARD F COVID-19 Ag FIA should be used with the STANDARD F Analyzers manufactured by SD BIOSENSOR. This test is for in vitro professional diagnostic use and intended as an aid to early diagnosis of SARS-CoV-2 infection in patient with clinical symptoms with SARS-CoV-2 infection.