Human Chorionic Gonadotropin (HCG) is a heterodimeric glycoprotein hormone composed of alpha and beta subunits with a molecular weight of approximately 36.7 kDa. HCG binds to LH/CG receptors (LHCGR), a G-protein coupled receptor, activating adenylyl cyclase and downstream cAMP/PKA signaling cascades. It is studied in vitro for receptor binding affinity assays, gonadotropin signaling pathway characterization, and steroidogenic enzyme expression in cell culture models. For in vitro research use only. Not for human or veterinary use. Specifications: - Quantity: 5000IU - Form: Lyophilized Powder - Purity: ≥98% (validated) - Molecular Weight: ~36.7 kDa Intended Use: Strictly for in vitro laboratory research. Not for use in humans or animals. Not to be used in foods, drugs, or medical diagnostics. This product has not been evaluated by the FDA. It is not intended to diagnose, treat, cure, or prevent any disease. All sales are final. Buyer assumes full responsibility for safe handling and regulatory compliance.