HCG

Buy HCG Research Peptide | Human Chorionic Gonadotropin | PrimaLab Peptide

HCG (Human Chorionic Gonadotropin) is a well-characterised glycoprotein hormone and one of the most studied compounds in reproductive endocrinology and LH receptor biology. PrimaLab Peptide supplies research-grade HCG at 99.36% purity, verified by independent third-party testing at Janoshik Analytical, with full batch documentation available before you order.

What Is HCG?

HCG is a two-subunit alpha-beta heterodimer glycoprotein with a combined molecular weight of approximately 36,000–40,000 Da, depending on glycosylation state. The alpha subunit shares structural homology with FSH, LH, and TSH, while the beta subunit is HCG-specific and determines its receptor binding selectivity. Because HCG binds the same LH/hCG receptors as endogenous luteinising hormone, it is widely used in research models studying LH receptor signalling, gonadal steroidogenesis, and reproductive endocrinology pathways.

HCG Research Applications

HCG is primarily studied in the context of LH receptor biology, both in vitro and in vivo. Common research applications include:

• LH receptor binding and activation assays
• Testosterone biosynthesis and Leydig cell steroidogenesis models
• Ovarian response and follicular development studies
• Reproductive endocrinology and HPG axis research
• Gonadotropin signalling pathway investigations

Researchers studying the upstream HPG axis frequently pair HCG research with Kisspeptin-10, which regulates GnRH pulse generation and the upstream neuroendocrine control of gonadotropin secretion. For broader endocrine and reproductive axis research, explore our full Growth Hormone & Endocrine Peptides category.

Purity & Third-Party Testing

Every batch of HCG stocked by PrimaLab Peptide undergoes independent third-party purity analysis at Janoshik Analytical. Our current lot tests at 99.36% purity. We publish batch COA results transparently so researchers can verify documentation before placing an order — no marketing numbers, no batch-swapping without notice.

This is the standard every researcher should expect from a peptide supplier: independently verified purity data, published and available on request.

Storage & Reconstitution

HCG from PrimaLab Peptide is supplied as a lyophilized (freeze-dried) powder — the most stable form for long-term research storage.

• Sealed (lyophilized): Store at −20°C, protected from light
• After reconstitution: Store at 2–8°C and use within your standard research protocol window
• Reconstitution solvent: Bacteriostatic Water (BAC Water) — available separately from PrimaLab Peptide
• Freeze-thaw cycles: Avoid repeated freeze-thaw cycles, as each cycle can degrade bioactivity. Aliquot before freezing if your protocol requires multiple uses

Product Specifications

Name	Human Chorionic Gonadotropin (HCG)
Type	Glycoprotein hormone — alpha/beta heterodimer
Form	Lyophilized powder
Purity	99.36% (Janoshik third-party verified)
Molecular Weight	~36,000–40,000 Da (glycoprotein)
Available Sizes	5000iu x10 vials, 10000iu x10 vials
Storage (sealed)	−20°C, protect from light
Storage (reconstituted)	2–8°C, use promptly
Reconstitution	Bacteriostatic Water (BAC Water)
COA	Janoshik third-party batch testing — available on request
Intended Use	Research purposes only

Related Research Peptides

Researchers studying the HPG axis and reproductive endocrinology frequently explore: Kisspeptin-10 (upstream GnRH axis regulation), Sermorelin Acetate (GHRH axis research), and IGF-1 LR3 (downstream growth factor signalling). Browse our complete Growth Hormone & Endocrine Peptides category or apply for discounted rates through our Wholesale Portal for bulk research orders.

Reconstitute with BAC Water, available separately in our Accessories & Reconstitution Supplies section.

⚠️ For research and laboratory use only. Not intended for human consumption. Must be handled by qualified professionals in a controlled research environment in accordance with all applicable institutional and regulatory guidelines.