beta (beta)-human chorionic gonadotropin

be·ta (β)-hu·man cho·ri·on·ic go·nad·o·tro·pin

(bā'tă hyū'măn kōr'ē-on'ik gō-nad'ō-trō'pin)
A 145-amino acid subunit unique to HCG, which has the same α-chain as FSH, LH, and TSH. Pregnancy tests specific for β-HCG are more sensitive because there is no confusion with other gonadotropins secreted by the pituitary.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
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