Anti-FRP3 antibodies enable researchers to detect and measure the FRP3 antigen in biological samples. This target is a reported synonym of the FRZB gene, which encodes frizzled related protein. This protein is known to function in the Wnt signaling pathway and hepatocyte differentiation, among other biological roles. The human version of FRP3 has a canonical amino acid length of 325 residues and a protein mass of 36.3 kilodaltons. It is reported to be a secreted protein. FRP3 is a member of the Secreted frizzled-related protein (sFRP) protein family.