Anti-GPR138 antibodies enable researchers to detect and measure the GPR138 antigen in biological samples. This target is a reported synonym of the OR6V1 gene, which encodes olfactory receptor family 6 subfamily V member 1. The human version of GPR138 has a canonical amino acid length of 313 residues and a protein mass of 34.9 kilodaltons. It is reported to be localized in the cell membrane of cells. GPR138 is a member of the G-protein coupled receptor 1 protein family.