Ready-to-use ELISA kits are available for the detection of inhibin beta A subunit, an alias of the protein, inhibin subunit beta A. The official gene symbol is INHBA. The kits can detect several species variants of the protein, including: chicken. The protein, with a mass of 47.4 kDa and length of 426 residues, is reported to be secreted. It is a member of the TGF-beta family and may be known by other names, including: follicle-stimulating hormone-releasing protein, erythroid differentiation protein, activin beta-A chain, Inhibin beta-1, FSH-releasing protein, and inhibin beta A chain.