For samples: Serum, plasma, cell culture supernatants, body fluid and tissue homogenate INTENDED USE This HBsAg preS1 ELISA kit is a 1.5 hour solid-phase ELISA designed for the quantitative determination of human HBsAg preS1. This ELISA kit for research use only, not for therapeutic or diagnostic applications. PRINCIPLE OF THE ASSAY HBsAg preS1 ELISA kit applies the quantitative sandwich enzyme immunoassay technique. The microtiter plate has been pre-coated with a monoclonal antibody specific fo