Provided below are ELISA kits targeting klotho, a human protein encoded by KL. This protein is 1012 amino acids long, with a mass of 116.2 kDa, and is a member of the Glycosyl hydrolase 1 family, Klotho subfamily. 2 isoforms have been identified. This is reported to be a membrane and secreted protein. It is also an enzyme classified as a(n) beta-glucuronidase. There is a noted implication in Tumoral calcinosis, hyperphosphatemic, familial, 3. Other alias names for this protein include: HFTC3. ELISA kits are available that are reactive to human, mouse, rat, bovine, chicken, primate, guinea pig, fish, plant, and other mammalian variants of the target antigen.