Ready-to-use ELISA kits are available for the detection of Car6, an alias of the protein, carbonic anhydrase 6. The official gene symbol is CA6. The kits can detect several species variants of the protein, including: human, mouse, rat, primate, and other mammalian. The protein, with a mass of 35.4 kDa and length of 308 residues, is reported to be secreted. It is a member of the Alpha-carbonic anhydrase family and may be known by other names, including: GUSTIN, secreted carbonic anhydrase, salivary carbonic anhydrase, carbonic anhydrase VI nirs variant 2, and carbonate dehydratase VI.