Anti-SGP2 antibodies enable researchers to detect and measure the SGP2 antigen in biological samples. This target is a reported synonym of the CLU gene, which encodes clusterin. This protein is known to function in innate immune responses and the apoptotic pathway, among other biological roles. The human version of SGP2 has a canonical amino acid length of 449 residues and a protein mass of 52.5 kilodaltons, although 6 isoforms have been identified. It is reported to be localized in the cytoplasmic vesicles and is secreted of cells and notably expressed in many tissues, such as the bronchus and cervix. Other names for this target antigen include AAG4, APO-J, and APOJ. Some SGP2 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.