Ready-to-use ELISA kits are available for the detection of hydroxysteroid (17-beta) dehydrogenase 1, an alias of the protein, hydroxysteroid 17-beta dehydrogenase 1. The official gene symbol is HSD17B1. The protein, with a mass of 35 kDa and length of 328 residues, is reported to be cytoplasmic. It is a member of the Short-chain dehydrogenases/reductases (SDR) family and may be known by other names, including: 17-beta-HSD, short chain dehydrogenase/reductase family 28CE member 1, placental 17-beta-hydroxysteroid dehydrogenase, 17-beta-hydroxysteroid dehydrogenase type 1, 17-beta-HSD 1, and estradiol 17-beta-dehydrogenase 1, and E2DH.