Both Intel Peptides and Phoenixbiolabs publish their own verifiable Janoshik certificate of analysis, so both clear The Peptide Watch's bar; ranked by most recent certificate, Intel Peptides (May 2026) is currently more recent than Phoenixbiolabs (Apr 2026). Both are among the only 28 of 318 UK sellers that pass. The Peptide Watch takes no vendor money.
| Checkable fact | Intel Peptides | Phoenixbiolabs |
|---|---|---|
| Own-name Janoshik COA | Yes | Yes |
| Latest certificate date | May 2026 | Apr 2026 |
| Verified rank | #12 | #13 |
Full audits: Intel Peptides · Phoenixbiolabs. Both appear on the independently-tested list.