There are a number of ELISA Kits available for the measurement of CYP19A1A, another term for the human protein, cytochrome P450 family 19 subfamily A member 1. Other synonyms may include: aromatase, cytochrome P-450AROM, cytochrome P450 19A1, cytochrome P450 family 19 subfamily A polypeptide 1, estrogen synthase, estrogen synthetase, and ARO. It is encoded by the CYP19A1 gene to yield a protein 503 amino acids in length and 57.9 kDa in size. However, there are up to 2 reported isoforms. The protein is categorized into the Cytochrome P450 family. Versions of CYP19A1A are present in other organisms, including: Mouse, Rat, Frog.