Anti-CHIT1 antibodies are used in the immunodetection of the protein chitinase 1. In humans, the canonical protein has a reported length of 466 amino acid residues and a mass of 51.7 kDa. Its subcellular localization is in the lysosomes and is secreted. Up to 4 different isoforms have been reported for this protein. It is notably expressed in spleen. A member of the Glycosyl hydrolase 18 protein family, CHIT1 is known to be involved with immune response pathways. Post-translational modifications have been described, including glycosylation. Synonyms for this target antigen include CHIT, CHITD, chitotriosidase-1, chitinase 1 (chitotriosidase), plasma methylumbelliferyl tetra-N-acetylchitotetraoside hydrolase, and CHI3. CHIT1 gene orthologs have been reported in the mouse, rat, bovine and chimpanzee species. A number of CHIT1 antibodies have been mentioned in research publications and have associated citations. Western Blot is a widely used application for these antibodies. ELISA and Immunohistochemistry are also common applications.