HCG 5000IU is a lyophilised vial of human chorionic gonadotropin, the glycoprotein hormone that activates the luteinising hormone (LH) receptor. Vi Corpus supplies HCG for Australian laboratories researching steroidogenesis, gonadal function and the hypothalamic-pituitary-gonadal axis.
Key research features of HCG 5000IU
- LH receptor agonist. HCG binds the same receptor as LH but has a much longer half-life.
- Two-subunit glycoprotein. It is made of an alpha subunit shared with LH, FSH and TSH, plus a unique beta subunit.
- Steroidogenesis models. It stimulates testosterone production in Leydig cells, which makes it a standard tool in testicular research.
- Common in PCT research. Labs study it alongside SERMs such as Nolvadex and Clomid.
- Third-party tested. Results are available through our Lab Tests page.
Specifications
| Compound | Human chorionic gonadotropin (hCG) |
|---|---|
| Potency | 5000 IU per vial |
| Form | Lyophilised (freeze-dried) powder |
| Structure | Glycoprotein, alpha and beta subunits |
| Receptor | LH/CG receptor |
| Reconstitution | Bacteriostatic water (sold separately) |
| Storage | 2–8 °C, protected from light |
Research applications
HCG is one of the most studied hormones in reproductive biology. For instance, it is used to model ovulation triggering, corpus luteum support and testicular steroid output. In male endocrine research, it is often examined during suppression and recovery of the HPG axis. As a result, it pairs naturally with the SERMs in our SERMs and PCT range.
Storing HCG 5000IU
Keep the unopened vial refrigerated. Once reconstituted with bacteriostatic water, store the solution at 2–8 °C and do not freeze it, since freezing can damage the glycoprotein.
Frequently asked questions
What does IU mean?
IU stands for international units, a measure of biological activity rather than weight.
Is HCG a peptide?
It is a glycoprotein hormone, which is a larger protein with attached sugar chains. Even so, it is usually stocked alongside research peptides.
Is HCG available for personal use?
No. HCG is a prescription medicine in Australia, so we supply it for laboratory research only.



