HCG 5,000 IU

HCG, or human chorionic gonadotropin, is a glycoprotein hormone that shares structural homology with luteinizing hormone and binds the same LHCGR receptor on testicular Leydig cells.

Receptor binding activates adenylyl cyclase and the cAMP-PKA signaling cascade, driving the conversion of cholesterol into testosterone.

Comparative studies have found hCG to be markedly more potent than LH at stimulating this cAMP response, despite both hormones ultimately producing similar testosterone output in Leydig cell experiments.

This LH-mimetic action makes hCG a key tool in research on gonadal steroidogenesis and the regulation of testosterone production.