Anti-osteoprotegerin antibodies enable researchers to detect and measure the osteoprotegerin antigen in biological samples. This target is a reported synonym of the TNFRSF11B gene, which encodes TNF receptor superfamily member 11b. This protein is known to function in the apoptotic pathway and extracellular matrix organization, among other biological roles. The human version of osteoprotegerin has a canonical amino acid length of 401 residues and a protein mass of 46 kilodaltons. It is reported to be a secreted protein. Other names for this target antigen include OCIF, OPG, and PDB5. Some osteoprotegerin antibodies may have been used in research and have associated citations. Western Blot is a widely used application for these antibodies. ELISA and Immunohistochemistry are also common applications.