Important: Kisspeptin is not FDA-approved and is sold for laboratory research purposes only (not for human consumption). This page compares research-grade suppliers on price and quality criteria — it is not medical advice or a purchase recommendation for personal use.
If you've decided to source kisspeptin for research, the two things that actually matter are purity (backed by a current, lot-specific COA) and price per mg. The research-chemical market is unregulated, so quality and cost vary widely between vendors. Below is our live pricing comparison plus the criteria we use to separate trustworthy suppliers from the rest.
Is kisspeptin legal to buy?#
Kisspeptin occupies the same legal space as most research peptides in the US: it is not a controlled substance, but it is also not approved for human use. It can be sold and purchased for laboratory research, and reputable vendors label it "research use only — not for human consumption." There is no prescription for research-grade kisspeptin because it isn't a prescription drug. Treat the research-use framing as a real legal and safety boundary, not a formality.
How we compared vendors#
Our ranking weighs four things, in order:
- Purity + COA — a current, lot-specific certificate of analysis from a third-party lab (HPLC purity, ideally ≥98%, plus mass-spec identity). A generic or missing COA is a dealbreaker.
- Price per mg — the only fair way to compare across vial sizes (kisspeptin is usually sold as a 10 mg KP-10 vial).
- Third-party testing & transparency — independent verification beats in-house claims; bonus for published lot results.
- Shipping & reliability — domestic shipping speed, discreet/stable packaging, and a clear reshipping/refund policy.
Top kisspeptin vendors compared#
Here's how the vendors we track line up on the things that don't change between batches. Prices are deliberately not repeated here — the live table above is the only figure that is current, and a number typed into this paragraph starts going stale the day it's written:
| Vendor | Kisspeptin (10 mg) | COA / testing | Payment | Our rating |
|---|---|---|---|---|
| Peptide Supply Co. | See live table | Public per-batch HPLC, 99%+ | Cards, crypto, Zelle | 4.5/5 |
| Elyria Bio | See live table | ILS Laboratories and BTLabs, lot-verifiable | Venmo, Cash App, X Money, crypto, card | Not yet rated |
Peptide Supply Co. — best overall (our #1)#
Peptide Supply Co. is our top-rated source and carries kisspeptin. It publishes public, per-batch HPLC COAs (consistently 99%+ purity) on a no-login Lab Results page, dispatches the same business day with tracked, discreet US shipping, and accepts credit cards and crypto (plus Zelle). Cards mean actual buyer protection, which peer-to-peer payment apps don't offer. Check the live table above for its current kisspeptin price.
Elyria Bio — lot-verifiable COAs#
Elyria Bio sells kisspeptin as a 10 mg vial; its current price is in the live table above. Its COAs come from ILS Laboratories and BTLabs, and the ILS certificates carry lot identifiers you can look up against the lab's own records rather than taking the vendor's word for it. Payment is unusually flexible for this market — Venmo, Cash App, X Money, crypto and card — which matters, because most vendors here are peer-to-peer only. One practical warning: a card payment shows up on your statement as FLOW GRADE, not Elyria Bio. Shipping is US domestic, roughly 1–6 days.
The honest caveat: it is a newer vendor and we have not independently re-run any of its certificates, so treat the purity figures as vendor-published.
Where to buy kisspeptin: what to look for#
Because the market is unregulated, the burden is on you to verify. Before buying from any vendor:
- Demand a current COA that matches the exact lot you're buying — not a screenshot from two years ago.
- Check the purity figure (HPLC) and that an identity method (MS) confirms it's actually kisspeptin.
- Confirm the form — KP-10 vs KP-54 (see below); they are not interchangeable in research.
- Compare cost per mg, not sticker price, using the live table above.
- Avoid marketplaces (general e-commerce listings) where COA and storage chain are unverifiable.
Peptide Supply Co. is our top-rated source and the primary recommendation across our site; the live table ranks all tracked vendors by current cost per mg so you can compare honestly.
Kisspeptin price: what's normal#
Among the research-chemical vendors we track, research-grade kisspeptin is almost always sold as a 10 mg KP-10 vial, so the sticker prices in the live table above compare fairly directly — and prices differ enough between vendors to be worth checking before you order. Which vendor sits at each end moves, so trust the table over any figure you've seen quoted elsewhere. Be aware there's a second tier: laboratory-reagent suppliers (the kind that sell to institutional labs) often sell kisspeptin in 1 mg quantities on a completely different price basis. The live table normalizes everything to cost per mg so you're comparing like for like.
KP-10 vs KP-54: which to buy#
Both are real kisspeptin fragments studied in humans:
- KP-10 is the shorter, most commonly sold research form — it's what most "kisspeptin 10 mg" vials contain.
- KP-54 (the longer fragment) has a longer duration of action and features heavily in the fertility/IVF literature.
For most research replicating the libido or testosterone/LH findings, KP-10 is the default and the more available SKU. Match the form to the study you're referencing rather than to price alone.
Do you need a prescription?#
No. Research-grade kisspeptin is not a prescription drug — it's sold for laboratory research use. That also means there's no clinical oversight built into the purchase, which is exactly why COA verification and the research-use boundary matter. For the science behind it — mechanism, benefits, dosing, and safety — see our complete kisspeptin guide.
Frequently asked questions
Where can I buy kisspeptin?
From research-chemical suppliers that provide a current, lot-specific COA. Compare live pricing and cost per mg in the table above; Peptide Supply Co. is our top-rated vendor.
How much does kisspeptin cost?
The live table at the top of this page has today's price for a 10 mg KP-10 vial from each tracked vendor. Institutional lab-reagent suppliers charge far more per mg, so make sure you're comparing research-grade vials with research-grade vials.
Is kisspeptin legal?
It is not a controlled substance and can be sold for laboratory research use in the US, but it is not FDA-approved for human use. Reputable vendors label it research-use-only.
What's the difference between KP-10 and KP-54?
KP-10 is the shorter, more commonly sold form; KP-54 is longer-acting and prominent in fertility research. They aren't interchangeable — match the form to your research.
How do I verify a kisspeptin COA?
Check that the certificate is recent, names the specific lot you're buying, reports HPLC purity (ideally ≥98%), and confirms identity by mass spectrometry. Ideally it's from an independent third-party lab.