A number of ELISA Kits are available that target Brp39, an alias of the protein, chitinase 3 like 1. The human protein, encoded by the gene CHI3L1, is a member of the Glycosyl hydrolase 18 family. The protein's cellular localization is indicated to be cytoplasmic and secreted. Additional synonyms or past names for this protein may include: ASRT7, CGP-39, GP-39, GP39, HC-gp39, HCGP-3P, YK-40, YKL-40, YKL40, YYL-40, hCGP-39. Homology is conserved in other species, such as Mouse, Rat.