Description

Human Chorionic Gonadotropin (HCG) is a complex heterodimeric glycoprotein composed of 237 amino acids. While naturally produced by the placenta during pregnancy, HCG is a vital research entity due to its structural similarity to Luteinizing Hormone (LH). It shares the same a-subunit as LH, FSH, and TSH, while its unique b-subunit allows it to bind with high affinity to the LH/choriogonadotropin receptor (LHCGR).

Performance Peptides Canada provides HCG in high-potency 5,000iu vials. Every batch undergoes rigorous quality control to ensure biological activity and 99%+ purity, supporting advanced research into the Hypothalamic-Pituitary-Testicular Axis (HPTA) and steroidogenesis.

Technical Specifications & Biochemical Profile

Our HCG is synthesized/purified to meet professional laboratory standards:

• Molecular Weight: ~36,700 Da
• Structure: Heterodimer (a and b subunits)
• Purity: ≥99.0% (Verified via HPLC)
• Biological Activity: 5,000iu per vial
• Form: Lyophilized white powder

Primary Research Mechanisms & Endocrine Impact

HCG is studied primarily for its ability to bypass the pituitary gland and directly stimulate peripheral endocrine organs.

1. Luteinizing Hormone (LH) Mimicry

In male biological models, HCG acts as an LH analogue, binding to the LHCGR on Leydig cells. This stimulates the conversion of cholesterol into pregnenolone, the precursor for endogenous testosterone production. Researchers utilize HCG to study the maintenance of intratesticular testosterone and the prevention of testicular atrophy in models of hypogonadism or HPTA suppression.

2. Steroidogenesis & Follicular Research

In female research models, HCG’s interaction with the LH receptor is used to study the final maturation of ovarian follicles and the induction of ovulation. It is a foundational tool for investigating the maintenance of the corpus luteum and the subsequent production of progesterone.

3. Metabolic & Weight Regulation Studies

Though controversial, HCG continues to be an entity of interest in metabolic research. Some studies investigate its role in modulating the diencephalon (specifically the hypothalamus) to observe its influence on lipid metabolism and fat distribution during calorie-restricted states.

Reconstitution & Stability Protocols

HCG is a large, delicate glycoprotein and is highly sensitive to environmental stressors.

• Reconstitution: Recommended diluent is Bacteriostatic Water or 0.9% Sodium Chloride.
• Technique: Tilt the vial and allow the liquid to flow down the side. Do not shake or agitate; HCG is prone to mechanical denaturation and “frothing,” which compromises the biological activity of the protein.
• Solubility: The 5,000iu concentration is highly soluble; a gentle swirling motion is sufficient for a clear solution.

Stability & Storage Benchmarks

Note: For maximum potency, reconstituted HCG must be kept refrigerated at all times (2C to 8C). Stability is significantly enhanced when using Bacteriostatic Water due to its antimicrobial properties.

HCG Research FAQ

Q: What is the difference between 5,000iu and 10,000iu HCG?

A: The difference is purely the concentration/potency within the vial. The 5,000iu format is preferred for long-term research studies or protocols requiring higher dosage volumes, providing better value and batch consistency for the researcher.

Q: Can HCG be used to study HPTA recovery?

A: Yes. HCG is the primary entity studied for its ability to “re-start” or maintain Leydig cell activity when endogenous LH production is suppressed. It is often studied in conjunction with SERMs (Selective Estrogen Receptor Modulators) in recovery models.

Q: Is your HCG shipped from within Canada?

A: Yes. Performance Peptides Canada provides 100% domestic shipping. This is critical for HCG, as it is a temperature-sensitive glycoprotein. Our domestic shipping ensures the cold chain is maintained and avoids the destructive delays of international customs.