Ready-to-use ELISA kits are available for the detection of Factor XIIIa, an alias of the protein, coagulation factor XIII A chain. The official gene symbol is F13A1. The kits can detect several species variants of the protein, including: human, mouse, rat, primate, guinea pig, and other mammalian. The protein, with a mass of 83.3 kDa and length of 732 residues, is reported to be cytoplasmic and secreted. It is a member of the Transglutaminase superfamily, Transglutaminase family and may be known by other names, including: fibrin stabilizing factor A subunit, factor XIIIa, coagulation factor XIII A1 polypeptide, coagulation factor XIII A polypeptide, and FSF A subunit, and transglutaminase A chain.