HCG (Human Chorionic Gonadotropin) is one of the most well-characterized glycoprotein hormones in endocrinology research. As an LH (luteinizing hormone) analog, it plays a critical role in research examining reproductive hormone pathways, testosterone production, and endocrine feedback mechanisms. Available in multiple potencies, HCG is a versatile tool for laboratory research across multiple disciplines.
What is HCG?
Human Chorionic Gonadotropin is a 36kDa glycoprotein hormone composed of alpha and beta subunits. The alpha subunit is shared with LH, FSH, and TSH, while the beta subunit is unique and determines biological specificity. HCG is produced naturally during pregnancy by the placenta, but its LH-mimetic properties make it invaluable for research applications.
Mechanism of Action
HCG acts primarily as an LH receptor agonist. When it binds to LH receptors in the testes (Leydig cells), it stimulates testosterone production through the following cascade:
- LH Receptor Binding: HCG binds to LH/CG receptors on Leydig cells with high affinity
- cAMP Activation: Receptor binding activates adenylate cyclase, increasing intracellular cAMP
- Steroidogenesis: cAMP activates cholesterol side-chain cleavage enzyme (P450scc), initiating the steroidogenic pathway
- Testosterone Production: The cascade results in increased testosterone synthesis from cholesterol precursors
Research Applications
Endocrinology Research
HCG is used to study the hypothalamic-pituitary-gonadal (HPG) axis, including feedback mechanisms, testosterone regulation, and gonadal function. It's a standard tool in research examining how exogenous LH-like stimulation affects endogenous hormone production.
Reproductive Biology
In reproductive research, HCG is used to study ovulation, corpus luteum function, and early pregnancy signaling. Its role as a pregnancy marker makes it relevant for diagnostic assay development research.
Available Potencies
AltPeptide offers HCG in three research-grade potencies: 2,000 IU, 5,000 IU, and 10,000 IU — covering the range needed for different research models and protocols.
Storage and Handling
HCG should be stored as directed in the product specifications. Once reconstituted, it should be used according to laboratory protocols and not subjected to repeated freeze-thaw cycles.
Conclusion
HCG remains a fundamental tool in endocrinology and reproductive biology research. Its LH-mimetic properties make it essential for studying testosterone production, HPG axis function, and gonadal physiology. Available in multiple potencies, it accommodates a wide range of laboratory research protocols.
Source Research-Grade HCG
AltPeptide offers HCG in multiple research-grade formulations. All products are third-party assayed, lyophilized for stability, and shipped with DDP worldwide delivery.
All compounds are sold for laboratory research purposes only. Not for human or animal consumption.
All compounds mentioned are sold for in-vitro laboratory research only. Not for human or animal consumption. Not approved by FDA or any regulator for therapeutic use. This article is for educational and informational purposes only.