Where to buy KPV in the UK: the sellers with a verifiable COA
The newest verifiable KPV certificate on any UK seller's website is on Lab77Peptides (lab77peptides.uk), analysed 28 Sep 2026 (task #231380 on Janoshik's site); 8 verified sellers hold one covering KPV, listed newest first below. Of the 450 active UK sellers we audit, 38 (8%) publish their own verifiable Janoshik certificate of analysis, and this page lists which of them hold one covering KPV, newest certificate first. It is a record of paperwork, not a recommendation: The Peptide Watch sells nothing, takes no money from sellers and links to none of them. KPV is a synthetic tripeptide fragment of alpha-MSH studied in inflammation research. As a very short peptide it is cheap to mis-synthesise, so independent confirmation of its identity is especially worthwhile. Purity and identity cannot be judged by eye, so an independent certificate you can check is the only real proof of what is in the vial.
The one test that matters for KPV
Ignore the marketing. The question is simple: does the seller publish a verifiable Janoshik certificate that names the seller itself as the client? If it does, you can confirm an independent lab tested that batch. If it shows an in-house document, a borrowed certificate, or "COA on request", you cannot. Learn the two-minute check in how to verify a Janoshik COA.
Which UK sellers publish a verifiable COA
Of the 450 active UK research-peptide sellers we audit, only 38 (8%) publish their own verifiable Janoshik certificate. Any of them is where you can actually verify testing, for KPV or any compound. A few: Lab77Peptides · Peptology Labs · Biovanta · Camo Chem · Biohackpeptides · Zenic Labs. See the full independently-tested list, or check a specific shop's certificate with the free COA Checker.
Verified UK vendors with a confirmed KPV Janoshik certificate (8)
- Lab77Peptides lab77peptides.uk · newest KPV report 28 Sep 2026 · task #231380
- Thoroughbredlabs thoroughbredlabs.co.uk · newest KPV report 18 Aug 2026 · task #222876
- Pureline Biolabs purelinebiolabs.co.uk · newest KPV report 22 Jul 2026 · task #209945
- Biohacklondon biohacklondon.com · newest KPV report 23 Jun 2026 · task #168699
- Peptifyuk peptifyuk.com · newest KPV report 11 May 2026 · task #149065
- Imperialpeptides imperialpeptides.co.uk · newest KPV report 5 Mar 2026 · task #113080
- Clinicore clinicore.co.uk · newest KPV report 30 Jan 2026 · task #103970
- Xlpeptides xlpeptides.com · newest KPV report 13 Nov 2025 · task #88417
Audit findings, not recommendations. Every entry is a report covering KPV that we opened on Janoshik's own site and that names the seller itself as the client; the date is the analysis date printed on the report where we have read it, otherwise the date the laboratory received the sample. The table below is the same ledger in full, so the two always agree. Not exhaustive: a vendor whose KPV report we have not yet read is not listed.
The 15 verifiable KPV certificates we have read, newest first
Each row was opened on Janoshik's own site by a real page load and transcribed. The client column is the name the laboratory printed; a certificate counts as a seller's own only when that name is the seller. The report date is the analysis date printed on the report where we have read it, otherwise the date the laboratory received the sample. The verify link opens the laboratory, never the shop. Audit findings, not recommendations.
| Seller | Task | Client on the report | Report date | Result | Batch | |
|---|---|---|---|---|---|---|
| Lab77Peptides | #231380 | Lab77peptides.uk | 28 Sep 2026 | KPV · 11.09 mg · 99.270% | L77KPV2612 | verify |
| Thoroughbredlabs | #222876 | Thoroughbred Labs | customerservice@thoroughbredlabs.co.uk | 18 Aug 2026 | KPV · 10.30 mg · 97.001% | TBLKP250 | verify |
| Pureline Biolabs | #209945 | Pureline Biolabs Ltd. | 22 Jul 2026 | KPV · 9.82 mg · 98.015% | PLB-011 | verify |
| Biohacklondon | #168699 | BioHack London Ltd | 23 Jun 2026 | GHK-Cu · 54.66 mg (GHK 48.13 mg, copper 6.53 mg) TB-500 · 11.80 mg BPC-157 · 11.18 mg KPV · 10.95 mg | 2026-06 | verify |
| Biohacklondon | #168600 | BioHack London Ltd | 19 Jun 2026 | KPV · 13.32 mg · 99.290% | 2026-06 | verify |
| Lab77Peptides | #193653 | Lab77Peptides.co.uk | 11 Jun 2026 | GHK-Cu · 60.09 mg (GHK 53.21 mg, copper 6.88 mg) TB-500 · 10.05 mg BPC-157 · 11.03 mg KPV · 9.73 mg | 77KL265 | verify |
| Peptifyuk | #149065 | Peptify UK | 11 May 2026 | KPV · 11.44 mg · 99.278% | 2026/04 | verify |
| Imperialpeptides | #113080 | Imperial Peptides UK | www.imperialpeptides.co.uk | 5 Mar 2026 | KPV · 13.86 mg · 99.228% | KPV10-01/28 | verify |
| Imperialpeptides | #113081 | Imperial Peptides UK | www.imperialpeptides.co.uk | 5 Mar 2026 | Endotoxin · 0.806 EU/vial | KPV10-01/28 | verify |
| Imperialpeptides | #113082 | Imperial Peptides UK | www.imperialpeptides.co.uk | 5 Mar 2026 | As · not detected Cd · not detected Pb · not detected | KPV10-01/28 | verify |
| Reta24 | #110442 | (a private individual's name) | 5 Mar 2026 | GHK-Cu · 56.28 mg BPC-157 · 11.66 mg TB-500 · 11.18 mg KPV · 10.81 mg | 241 | verify |
| Clinicore | #103970 | clinicore | 30 Jan 2026 | KPV · 11.90 mg · 99.916% | kP10101 | verify |
| Clinicore | #98777 | clinicore | 13 Jan 2026 | GHK-Cu · 60.40 mg BPC-157 · 12.22 mg TB-500 · 11.05 mg KPV · 11.38 mg | KL80101 | verify |
| Xlpeptides | #88417 | XL Peptides | 13 Nov 2025 | KPV · 10.77 mg · 99.386% | 250KPV | verify |
| Kensingtonlabs | #78293 | Anonymous | 12 Sep 2025 | KPV · 2.81 mg · 99.574% | KPV-787AZ | verify |
What the 15 KPV certificates show
We have read 15 Janoshik reports covering KPV, published by 10 UK sellers. Each was opened on Janoshik's own website. 13 of the 15 name the seller itself as the client; the client column in the table above shows the name on the rest. 7 of the 15 are dated within the last six months and 1 is more than a year old. The newest is dated 28 Sep 2026 and the oldest 12 Sep 2025.
9 of the reports give a purity figure for KPV. The figures run from 97.001% to 99.916%, and 7 of the 9 are at 99% or above. 4 more give the amount recovered and no purity figure for it, which is usual where the vial holds a blend. 2 reports test for heavy metals or endotoxins instead. A purity figure describes the sample the laboratory received, not every vial from that batch.
Read directly from the newest reports: Lab77Peptides: task #231380, analysed 28 Sep 2026, 11.09 mg recovered at 99.270%, client Lab77peptides.uk; Thoroughbredlabs: task #222876, sample received 18 Aug 2026, 10.30 mg recovered at 97.001%, client Thoroughbred Labs; Pureline Biolabs: task #209945, sample received 22 Jul 2026, 9.82 mg recovered at 98.015%, client Pureline Biolabs Ltd..
A certificate is a batch document. The lines that matter are the compound (it must say KPV, not only a batch code), the client (the shop, not its supplier) and the analysis date. A new batch is untested until a new report appears.
Questions people ask
Which UK sellers publish a verifiable Janoshik certificate naming KPV?
As of 4 October 2026, 8: Lab77Peptides, Thoroughbredlabs, Pureline Biolabs, Biohacklondon, Peptifyuk, Imperialpeptides, Clinicore, Xlpeptides. Each has a report on Janoshik's own website that names the seller as the client and lists KPV. That is a statement about paperwork, not a recommendation; The Peptide Watch does not recommend anywhere to buy KPV.
How recent is the newest KPV certificate from a UK seller?
The newest we have read is Janoshik task #231380, analysed 28 Sep 2026. It is published by Lab77Peptides and names it as the client. A certificate covers one batch, so an old one says little about stock on sale today.
How do I check that a certificate for KPV is genuine?
Four things: an independent laboratory is named; the client field names the seller you are buying from, not a supplier; the compound line says KPV; and the report's task number and key open the same report on the laboratory's own website (verify.janoshik.com). A branded PDF with no laboratory name and no verification code fails on the first check, however professional it looks. The free COA Checker on this site runs the checks for you.
Is KPV a licensed medicine in the UK?
Not a licensed medicine in the UK. Sold as a research chemical. No registered trials; never approved anywhere. The Peptide Watch does not give legal or medical advice.
Why does The Peptide Watch not say where to buy KPV?
Because the site records paperwork, not recommendations. A verifiable certificate proves that a sample of one batch was tested. It does not prove the vial you receive matches it, and it says nothing about whether anyone should use KPV. Listing which sellers publish a certificate you can check, and which publish nothing, is as far as the evidence goes.
KPV in the UK at a glance
| Active UK sellers listing KPV | 20 |
|---|---|
| Of which publish a verifiable own-name certificate | 8 |
| Of which name no laboratory at all | 5 |
| Paying for Google Ads on it | 2 |
| Sellers of it that have closed or vanished | 1 |
Counted from the vendor ledger at build time: a seller is included when its audit records KPV in its certificates or its catalogue notes. Audit findings, not recommendations.
The other 12 sellers: what they publish instead
- No named lab, nothing to verify: 5
- Claims testing but names no lab: 2
- No testing claim found: 2
- Reseller showing the maker's certificate: 1
- 'COA on request', nothing published: 1
- No lab named: 1
Each pattern is explained on the seller's own audit page, with what we saw and the date. The A-Z directory lists every seller.
The market for KPV in the UK
Advertising. Google's Ads Transparency Centre shows 2 of these sellers running ads: Peptifyuk, Thoroughbredlabs. Paid reach is where a new buyer meets a brand before meeting any certificate.
Companies. 11 of the 20 can be matched to a Companies House record; the median company is 10 months old and 7 were incorporated within the last year. A seller with no traceable company is not necessarily dishonest, but there is nobody to hold to its certificate.
Reviews. 6 of the 20 have a Trustpilot profile with a score; the median is 4.8, 5 sit at 4.5 or above and 0 below 3.0. A review score says who collects reviews, not who tests, which is why it sits next to a certificate and never instead of one.
Changes among KPV sellers
- 2026-10-02 Renova Peptides (renovapeptides.co.uk) added to the audit on the watch list.
- 2026-09-29 UK Sterling Peptides (uksterlingpeptides.com) left the audit (closed, parked, or out of scope).
- 2026-09-29 UK Peptide Bio (ukpeptidebio.co.uk) added to the audit on the watch list.
- 2026-09-28 Clinicore (clinicore.co.uk) added to the audit on the verified list.
- 2026-09-27 Lab77Peptides (lab77peptides.uk) published a newer own-name certificate (now Sep 2026).
- 2026-09-21 Peptixa (peptixa.co.uk) added to the audit on the watch list.
From the site changelog, which also runs as a JSON feed.
What the research shows for KPV, and what it does not
| Papers on PubMed | 46 |
|---|---|
| Indexed as rat or mouse studies | 20 |
| Indexed as clinical trials | 0 |
| Published since 2020 | 16 |
| Trials registered on ClinicalTrials.gov | 0 |
A three-amino-acid fragment of a human hormone, patented in 1991 and never developed. KPV is the last three residues of alpha-MSH. James Lipton's group patented its anti-inflammatory use (US patents 5,028,592 and 5,157,023); those patents expired years ago. PubMed indexes 46 papers, mostly mouse models of colitis and cell work.
No human trial has ever been run. PubMed indexes 0 clinical trials and ClinicalTrials.gov lists no registered study.
Every claim on a shop page about KPV therefore rests on animal and cell data, and the only checkable fact about a vial is its certificate.
Who owns KPV, and where it stands
| Originator | James Lipton and colleagues, University of Minnesota, from the alpha-MSH sequence. |
|---|---|
| Rights | Patents (1991, 1992) have expired; no rights holder or developer. |
| Development status | Never in clinical development. No registered trials; never approved anywhere. |
| Clinical trials | 0 registered on ClinicalTrials.gov |
| In the UK | Not a licensed medicine in the UK. Sold as a research chemical. |
Counts are from PubMed on 15 September 2026 using the queries recorded in our evidence file; "clinical trial" is PubMed's own publication-type index. This is a description of the published record, not medical advice and not an argument for or against use.
Sources (5)
- A new era of doping? Use of peptide and peptide-analog drugs in recreational and professional sport and bodybuilding: a critical review. (J Sports Med Phys Fitness, 2026, PMID 41880199)
- The Melanocortin System in Inflammatory Bowel Diseases: Insights into Its Mechanisms and Therapeutic Potentials. (Cells, 2023, PMID 37508552)
- Host defense peptides as a new drug lead to a strategy for inflammatory bowel disease. (Drug Discov Today, 2025, PMID 41241376)
- US Patent 5,028,592, antipyretic and anti-inflammatory peptides (1991)
- US Patent 5,157,023, Lys-Pro-Val compositions (1992)
The Peptide Watch's position on KPV
Not a licensed medicine in the UK. Sold as a research chemical. The Peptide Watch reads the certificates UK sellers publish and does not recommend anywhere to buy KPV. Sellers on this page are listed by the date of their newest KPV certificate and by nothing else. If you can verify a seller's testing, you can at least judge its evidence; if you cannot, you are taking the seller's word for what is in the vial. See how UK testing compares across every seller in the market statistics.
An honest note: a verifiable certificate proves a sample of a batch was tested, not that the specific vial you receive matches it, see what this can and can't tell you. The Peptide Watch sells no KPV and links to no shop; this is research-use-only information, not medical or dosing advice.
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