Creative Biolabs' Anti-HBsAg Recombinant Antibody Fab Fragment (PE1-1) is a Human monoclonal antibody. The Anti-HBsAg Recombinant Antibody Fab Fragment (PE1-1) was generated using S as the antigen. This antibody has been shown to work in applications such as: EIA, Immunoassay, and ELISA.