Kisspeptin-10: Reproductive Axis Research Guide (2026)
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Introduction (research-only scope)
Kisspeptin-10 is the shortest active fragment of the kisspeptin family, the peptides encoded by the KISS1 gene that act as the upstream gate of the reproductive hormone axis. Unlike most compounds in this catalog, its biology was established through human genetics before any therapeutic interest existed. This guide covers that history, the mechanism and the current evidence.
Research use only. The material described here is a laboratory reagent for in-vitro research by qualified professionals. It is not a medicine, supplement, cosmetic ingredient or veterinary product, is not for human or animal use, and nothing on this page is medical advice or a claim of effect in any person.
What is Kisspeptin 10?
Kisspeptin-10 (molecular mass 1302.45, CAS 374675-21-5) is the C-terminal decapeptide of kisspeptin-54, retaining full activity at the receptor. Peptra Labs supplies it as a lyophilised research reagent, 5 mg per vial.
How the reported mechanism works
KISS1R and GnRH neurons
Kisspeptins bind KISS1R, formerly GPR54, on hypothalamic GnRH neurons, and that binding is the permissive signal for pulsatile GnRH release. The pathway was identified when loss-of-function mutations in GPR54 were shown to cause failure of puberty, reported in the New England Journal of Medicine in 2003; the receptor is therefore one of the few in this catalog whose necessity in humans is established by genetics rather than inferred from animal work.
Why the decapeptide is used
Kisspeptin-10 is short, synthetically accessible and fully active at KISS1R, which makes it the standard probe for this pathway in receptor and neuroendocrine studies.
What the published evidence covers
The evidence base is genuinely strong by the standards of this catalog: human genetics establishing the pathway, and recent controlled human work, including a 2026 study in the European Journal of Endocrinology reporting sustained gonadotropin stimulation with chronic subcutaneous kisspeptin-10 over twelve days, and a 2025 EBioMedicine study of intranasal administration. Those studies were conducted in medical research settings under supervision and describe those protocols, not the use of research-grade material.
How to verify a Kisspeptin 10 research peptide is real and pure
Two tests answer two different questions: mass spectrometry confirms identity (expected molecular mass 1302.45), HPLC quantifies purity. Our specification is at least 98%. The published report for batch QYA038 reported 99% purity and can be checked on the testing laboratory’s own platform: third-party verification. Match the batch number printed on your vial against the lab reports archive rather than relying on a certificate image; what a valid certificate must contain is explained in how to read a certificate of analysis.
Storage and reconstitution
Store the lyophilised material sealed, dry and protected from light at 2 to 8 °C for routine laboratory use, colder for long-term archiving. After reconstitution with bacteriostatic water, keep refrigerated and use within the window your protocol defines; repeated freeze-thaw cycles degrade peptides. General handling for all our reagents is in the peptide storage protocol.
Regulatory status
Kisspeptin-10 is not an authorised medicine in the European Union, the United Kingdom or the United States. It is not named individually on the WADA Prohibited List, but section S0 covers substances without approval for human therapeutic use. Research-grade material supplied here is not a medicine and is for in-vitro laboratory use only. The wider framework, including anti-doping status, is described in the peptide risk profile.
Why labs choose our Kisspeptin 10
Batch-numbered vials, published reports where a batch has been tested, shipping from an EU warehouse with tracking (no customs inside the EU) and prices shown with VAT included. Product page: Kisspeptin 10 5 mg. Country-by-country sourcing questions are covered in the buyer guide Buy Kisspeptin 10 in Europe.
References
- Seminara SB et al. The GPR54 gene as a regulator of puberty. N Engl J Med. 2003. PubMed 14573733
- Chronic subcutaneous kisspeptin-10 stimulates gonadotropin secretion for 12 days in healthy men. Eur J Endocrinol. 2026. PubMed 42549827
- Intranasal kisspeptin administration rapidly stimulates gonadotropin release in humans. EBioMedicine. 2025. PubMed 40215751