label: Infectious agent antigen detection by immunoassay technique (eg, enzyme immunoassay [EIA], enzyme-linked immunosorbent assay [ELISA], fluorescence immunoassay [FIA], immunochemiluminometric assay [IMCA]), qualitative or semiquantitative; hepatitis B surface antigen (HBsAg), quantitative
label_lc: infectious agent antigen detection by immunoassay technique (eg, enzyme immunoassay [eia], enzyme-linked immunosorbent assay [elisa], fluorescence immunoassay [fia], immunochemiluminometric assay [imca]), qualitative or semiquantitative; hepatitis b surface antigen (hbsag), quantitative