HCG – 5000IU

Why Buy HCG?

Buy HCG because it acts just like luteinizing hormone (LH) and is a key tool for testosterone and fertility research. HCG (Human Chorionic Gonadotropin) is a glycoprotein hormone that binds the same LH/hCG receptor as LH. When it binds that receptor on testicular Leydig cells, it switches on the cAMP/Gαs pathway that makes testosterone.^[1] Because it keeps the testes working, it is widely studied alongside testosterone protocols to hold up natural testosterone production.^[2] Reviv Peptides ships it as a 5,000 IU vial at ≥99% purity, with a Certificate of Analysis (COA) on request.

Benefits & Uses

Labs study HCG for reproductive hormone research in both males and females. Common research uses include:

• LH receptor activation and testosterone-making models^[1]
• HPG axis and pituitary-gonad feedback research
• Sperm production and male fertility studies^[2]
• Ovulation and female reproductive endocrinology models
• Leydig cell function and steroid-making pathway research
• Undescended-testicle (cryptorchidism) models

These uses come from published research on HCG and the LH receptor.^[1][2]

How It Works

HCG works by copying LH at the LH receptor. When it binds Leydig cells in the testes, it raises cAMP inside the cell through the Gαs protein.^[1] That cAMP turns on the StAR protein and the CYP11A1 enzyme, which start turning cholesterol into testosterone. In female models, it acts like the LH surge at the ovary, helping eggs mature and triggering ovulation. It also lasts much longer in the body than LH (about 36 hours versus about 20 minutes), which makes it an easier stand-in for LH in research.

5000 IU Vial Specifications

Here are the basic facts for the 5,000 IU vial.

• Type: Glycoprotein (α + β subunits)
• Molecular Weight: ~37 kDa (whole glycoprotein)
• Purity: ≥99% (third-party verified)
• Form: Freeze-dried (lyophilized) powder
• Vial Size: 5,000 IU
• Storage: −20 °C for long term; 4 °C for short term (up to 4 weeks once mixed)
• Mixing: Bacteriostatic water

Why Choose Reviv Peptides?

Choose Reviv Peptides because every vial is third-party tested for identity and purity before it ships, with a COA available on request.^[3] We are a Canadian supplier and we ship HCG discreetly across Canada in research-ready packaging.

Canada FAQs

How is HCG used in testosterone research?

It copies LH at the Leydig cell LH receptor, which raises testosterone made inside the testes.^[1] It is used in research on HPG axis recovery, low-testosterone models, and post-cycle recovery protocols.^[2]

What is the half-life of HCG compared to LH?

LH lasts about 20 minutes in the blood. HCG is heavily sugar-coated, which stretches its half-life to about 36 hours. That makes it a much easier stand-in for LH in research.

Is HCG available in Canada for research?

Yes. Reviv Peptides supplies HCG 5,000 IU vials across Canada.

Reconstitution & Dosing Guide

Here is how to mix and store the vial for research.

How to Reconstitute

Add 2.0 mL of bacteriostatic water to the vial. Pour the water slowly down the inside wall — do not aim it at the powder. Swirl gently until it fully dissolves; do not shake. This makes about 2,500 IU/mL. Keep the mixed vial at 4 °C and use it within 28 days.

Low Starting Dose

A common research starting point is a low amount a few times a week.

• Amount per injection: 500 IU — 20 units (0.20 mL) on a U-100 syringe
• How often: Three times a week (e.g. Mon / Wed / Fri), under the skin
• Length: 8–12 weeks

Start at the lowest useful dose and adjust to the response seen.

Sources: [1] hCG stimulates testosterone synthesis in Leydig cells — PubMed. [2] Strategies to Increase Testosterone in Men Seeking Fertility (hCG) — PubMed. [3] Synthetic peptide purity (HPLC + MS) — NIH / PMC.