Provided below are ELISA kits targeting Rh blood group D antigen, a human protein encoded by RHD. This protein is 417 amino acids long, with a mass of 45.2 kDa, and is a member of the Ammonium transporter (TC 2.A.49) family, Rh subfamily. 6 isoforms have been identified. This is reported to be a membrane protein. Other alias names for this protein include: blood group Rh(D) polypeptide, D antigen (DCS), RH polypeptide 2, Rh blood group C antigen, Rh blood group CcEe antigen, Rh blood group antigen Evans, and Rh blood group D anitgen.