Anti-CRTAP antibodies are used in the immunodetection of the protein cartilage associated protein. In humans, the canonical protein has a reported length of 401 amino acid residues and a mass of 46.6 kDa. Its subcellular localization is in the extracellular matrix and is secreted. It is notably widely expressed in many tissue types. A member of the Leprecan protein family, CRTAP is known to be involved with protein stabilization and spermatogenesis. Post-translational modifications have been described, including glycosylation. The CRTAP gene has been associated with the disease, Osteogenesis imperfecta. Synonyms for this target antigen include LEPREL3, OI7, P3H5, leprecan-like 3, prolyl 3-hydroxylase family member 5 (non-enzymatic), and CASP. CRTAP gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species. Some CRTAP antibodies may have been used in research and have associated citations. Western Blot is a widely used application for these antibodies. Immunofluorescence and Immunohistochemistry are also common applications.