A number of ELISA Kits are available that target HM74a, an alias of the protein, hydroxycarboxylic acid receptor 2. The human protein, encoded by the gene HCAR2, is a member of the G-protein coupled receptor 1 family. The protein's cellular localization is indicated to be membrane-associated. Additional synonyms or past names for this protein may include: GPR109A, HCA2, HM74a, HM74b, NIACR1, PUMAG, Puma-g. Homology is conserved in other species, such as Mouse, Rat.