✅ Independently tested, its certificate is genuinely its own and verifiable.
Xlpeptides publishes its own Janoshik certificate of analysis, naming Xlpeptides as the client, with its most recent certificate dated Mar 2026. Because Janoshik reports carry a unique code checkable on janoshik.com, the result can be independently verified.
The certificate
✅ Its certificate is its own. Xlpeptides publishes its own Janoshik certificate of analysis, naming Xlpeptides as the client, with its most recent certificate dated Mar 2026. Because Janoshik reports carry a unique code checkable on janoshik.com, the result can be independently verified.
Pricing vs the market, benchmarked on BPC-157
BPC-157
£2.8/mg (≈ £28 for a 10 mg vial)
Versus market median (£3.0/mg)
0.93×, competitive
In line with the wider UK market. The Peptide Watch benchmarks every vendor on the same compound, BPC-157, the most common research peptide, as £ per milligram, so prices are directly comparable across all providers.
Payment
🚩 Bank only, bank transfer / crypto only, so if it never ships there is no chargeback to get your money back.
The audit checklist
Check
Result
Verifiable certificate in its own name
Yes, own Janoshik COA
Independent lab named
Janoshik
Tests its own stock
Yes
Pricing vs market
0.93× median (competitive)
The bottom line. Xlpeptides earns a place on the independently-tested list because it pays an independent lab (Janoshik) to test its own stock in its own name, and lets you verify it. That is the standard.
⚠️ Is anything on this page wrong or out of date? Submit a correction request and we'll look into it, vendors welcome too.