HCG

HCG, or human chorionic gonadotropin, is a glycoprotein hormone studied for reproductive endocrinology, gonadal signaling, testosterone production, ovulation biology, and fertility-related pathways. It mimics luteinizing hormone activity by interacting with LH receptors, which makes it useful in research involving Leydig cell function, ovarian follicle maturation, and hypothalamic-pituitary-gonadal axis regulation. HCG is not a small peptide but a larger hormone composed of alpha and beta subunits. Researchers use it to study reproductive hormone signaling, endocrine feedback, steroidogenesis, pregnancy biology, and the coordination of pituitary and gonadal function.