Anti-DHPR antibodies enable researchers to detect and measure the DHPR antigen in biological samples. This target is a reported synonym of the QDPR gene, which encodes quinoid dihydropteridine reductase. This protein is known to function in liver development, among other biological roles. The human version of DHPR has a canonical amino acid length of 244 residues and a protein mass of 25.8 kilodaltons, although 2 isoforms have been identified. It is reported to be notably expressed in the hippocampus, colon, cerebral cortex, cerebellum, and caudate. This target antigen may also be known as HDHPR.