Human Chorionic Gonadotropin (hCG): Biological Function — Research Overview

Human chorionic gonadotropin (hCG) is a heterodimeric glycoprotein hormone with a shared glycoprotein-hormone alpha subunit and a hormone-specific beta subunit. The prepared product is labeled 5000 IU; IU expresses biological activity and is not converted here into an unsupported mass value.

Lapthorn et al. (1994) determined the crystal structure of hCG. The structural study describes cystine-knot subunit folds and a beta-subunit segment that wraps around the alpha subunit. This is direct molecular-structure evidence, not a treatment trial or a certificate for the prepared product.

Nwabuobi et al. (2017) review hCG biology, including LH/hCG receptor signaling. Bansal et al. (2012) review immunomodulation in pregnancy, and Herkert et al. (2022) review the wider literature. These sources are reviews and are identified as such; they are not three independent primary experiments.

Endogenous hormone biology, a molecular structure and review-level clinical background do not establish the identity, activity or clinical effects of a catalog lot. No administration protocol or human-use recommendation is supplied. Exact source, product and lot binding remains necessary for any analytical evidence.