Proteins and hormones4 specifications

HCG

Name: HCG
Brand: SUN Peptides
SKU: G1K

COA on request

HCG: A hormone commonly used to help maintain testosterone levels, especially after cycles of certain androgens. It works by mimicking the body's natural LH (luteinizing hormone) — a signal that tells the testes to produce more testosterone. This makes it a popular choice for those looking to support natural hormone function and recovery, particularly in fitness and bodybuilding settings.

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Selected SKU: G1K
Pack: 1000 IU x 10 vials
Status: Available for inquiry

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Purity≥98%Estimated delivery: within one week after the order is placed.

COA is available on request

COA files are available in the document library; additional batch-specific documentation can be requested with your inquiry. Each batch is tested with HPLC purity analysis (≥98%). For MSDS or detailed storage protocols, please contact our sales team.

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DeliveryWithin one week after order

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DocumentationCOA available on request

Research effects

Human chorionic gonadotropin (HCG) is a glycoprotein hormone secreted by placental trophoblast cells, holding significant clinical value in reproductive medicine. In females, HCG mimics luteinizing hormone (LH) to trigger final oocyte maturation and ovulation, making it widely used in assisted reproductive technologies (e.g., IVF) for ovulation triggering and treatment of infertility due to ovulation disorders. In males, HCG stimulates testicular Leydig cells to produce testosterone, used to treat delayed puberty and male infertility resulting from hypogonadotropic hypogonadism, while also helping to maintain sexual function and improve semen quality. Additionally, HCG is used in pediatrics for treating cryptorchidism.

Research mechanism

HCG exerts its effects by binding to the luteinizing hormone/chorionic gonadotropin receptor (LHCGR), a G protein-coupled receptor. Receptor activation initiates the cAMP/PKA signaling pathway, stimulating downstream steroidogenic enzymes to promote gonadal sex hormone secretion (testosterone or estradiol). In females, this signaling cascade triggers follicular wall rupture and oocyte release; in males, it induces Leydig cell proliferation and testosterone production. HCG shares the same receptor with LH but possesses a longer half-life (24-36 hours), enabling sustained pharmacological effects and making it suitable as a clinical LH substitute.

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Material identity

Source, recombinant or extracted status, specific activity, excipients, unit definition, and cold-chain requirements must be documented.

Storage guidance

Store unopened material in its original sealed packaging, protected from light, moisture, and repeated temperature changes. Follow the product label and batch document for the exact storage temperature. After opening or preparation, use only a validated laboratory storage protocol.

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G1K1000 IU x 10 vials

HCG