Anti-ADHR antibodies are protein reagents that detect specific antigens. The ADHR antigen is another term for the human protein arginine vasopressin receptor 2, encoded by the AVPR2 gene. The protein is a known receptor for arginine vasopressin. Canonically, it has an amino acid length of 371 residues and a mass of 40.3 kilodaltons. Its subcellular localization is in the cell membrane. The ADHR protein is a member of the G-protein coupled receptor 1 protein family.