Anti-PGDS antibodies enable researchers to detect and measure the PGDS antigen in biological samples. This target is a reported synonym of the HPGDS gene, which encodes hematopoietic prostaglandin D synthase. This protein is known to function in signal transduction pathways, among other biological roles. The human version of PGDS has a canonical amino acid length of 199 residues and a protein mass of 23.3 kilodaltons. It is reported to be localized in the cytoplasm of cells and notably expressed in the tonsil, skin, lymph node, and bone marrow. PGDS is a member of the Sigma protein family.