hMG (Human Menopausal Gonadotropin): A Laboratory Research Reference

Human menopausal gonadotropin (hMG) is a mixture of the gonadotropin glycoprotein hormones follicle-stimulating hormone (FSH) and luteinising hormone (LH). It is studied in laboratory research for its activity at the FSH and LH receptors in experimental models.

This page is a non-promotional scientific reference for researchers. It summarises the composition, molecular characteristics, mechanism as described in the literature, research areas, and analytical testing of hMG. It does not provide dosing, therapeutic, or human-use guidance of any kind. hMG supplied by Bulk Aussie Peptides is for laboratory research purposes only.

What Is hMG?

Human menopausal gonadotropin is a preparation of two gonadotropin hormones that together stimulate gonadal function: FSH, which acts on follicular and Sertoli cells, and LH, which acts on theca and Leydig cells. Because it contains both hormones, hMG is used in research as a combined gonadotropin stimulus rather than a single defined molecular entity. It is a glycoprotein preparation rather than a short synthetic peptide.

For background on how biological research materials are characterised, see the synthetic peptides research guide.

Molecular Characteristics

• Classification: a combined gonadotropin preparation containing FSH and LH glycoprotein hormones.
• Components: follicle-stimulating hormone and luteinising hormone, each a heterodimeric glycoprotein sharing a common alpha subunit.
• Activity units: gonadotropins are described by bioactivity in terms of international units (IU), reflecting the mixed nature of the preparation.
• Physical form: supplied as a lyophilised (freeze-dried) powder, the standard presentation for research material.

How hMG Works

The two gonadotropins in hMG act through distinct receptors. FSH binds the FSH receptor to promote cyclic AMP signalling and support of follicular development and spermatogenesis, while LH binds the LH receptor to stimulate steroidogenesis. Together they recapitulate the combined pituitary gonadotropin drive studied in experimental reproductive models.

These observations describe receptor pharmacology in model systems and do not constitute a therapeutic use.

Areas of Scientific Research

• Gonadotropin receptor pharmacology: characterisation of FSH and LH receptor signalling.
• Reproductive physiology: studies of follicular development and ovulation in experimental models.
• Combination stimulus studies: use of the combined FSH and LH signal to interrogate reproductive-axis function.

These investigations are conducted in vitro or in approved animal research models under institutional oversight. They do not translate to approved human use.

Analytical Testing

• HPLC for content and impurity assessment.
• Mass spectrometry and bioassay for identity and biological activity where documented.

Guidance on reading the resulting documents is available in the article on how to read a peptide Certificate of Analysis.

Storage and Handling

In a laboratory context, lyophilised hMG is typically stored in a freezer, protected from light and moisture, and handled according to the product-specific documentation. General guidance is covered in the peptide storage and stability reference.

Frequently Asked Questions

• What is hMG? hMG is a preparation containing the gonadotropin hormones FSH and LH.
• Is hMG a single peptide? No — it is a mixture of two glycoprotein hormones.
• Which receptors does hMG engage? The FSH receptor and the LH receptor.
• What is hMG studied for? It is investigated in laboratory models for gonadotropin receptor signalling and reproductive physiology.
• How is hMG activity described? By bioactivity units (international units), reflecting its mixed composition.

References

• Lunenfeld, B. (2004). Historical perspectives in gonadotrophin therapy. Human Reproduction Update, 10(6), 453–467. PubMed 15388674

Related Research Resources

• hCG: A Laboratory Research Reference — a related gonadotropin glycoprotein.
• Synthetic Peptides: Research Guide — how research compounds are produced and verified.