The HBsAg Test Cassette (Whole Blood/Serum/Plasma) is a fluorescence immunoassay for the quantitative detection of HBsAg in human whole blood, serum or plasma specimen. A Fluorescence Immunoassay test for the quantitative detection of HBsAg in human whole blood, serum or plasma with the use of Fluorescence Immunoassay Analyzer. For professional in vitro diagnostic use only.