✅ Independently tested, its certificate is genuinely its own and verifiable.
Tested Peptides publishes its own Janoshik certificate of analysis, naming Tested Peptides as the client, with its most recent certificate dated Jan 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. Tested Peptides publishes its own Janoshik certificate of analysis, naming Tested Peptides as the client, with its most recent certificate dated Jan 2026. Because Janoshik reports carry a unique code checkable on janoshik.com, the result can be independently verified.
⏳ This certificate is dated Jan 2026, 6 months old. A Certificate of Analysis only covers the single batch that was tested. Unless the seller has re-tested since, the stock you'd receive today is unverified, or it has sold the same batch for 6 months, which for a peptide is not credible.
Pricing vs the market, benchmarked on BPC-157
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. No public BPC-157 price feed was available for this vendor at audit.
The bottom line. Tested Peptides 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⚠️ Is anything on this page wrong or out of date?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.