A high-level view of every peptide we cover and every vendor we track, scored on lab quality, COA transparency, sentiment, reliability, and verified pricing. Aggregated from independent testing programs and vendor-published COAs.
Top peptide rankings
Top five vendors per peptide. Click any vendor to see their full profile, or any "see all" link for the complete ranking.
Composite scores aggregate independent lab data, vendor-published COAs, and verified pricing — recomputed daily as new tests land. We do not run lab tests.
Top vendors overall
Recently refreshed
Vendors with the most recent independent test results we've ingested. Daily sync at 03:00 UTC.
| Last test | Vendor | Peptide | Score | Purity | Profile |
|---|---|---|---|---|---|
| 2026-04-23 | Peptide Partners | Retatrutide | 9.6B+ |
99.90% | view → |
| 2026-03-04 | Peptide Partners | BPC-157 | 7.2A |
98.87% | view → |
| 2026-03-04 | Peptide Partners | TB-500 | 7.1A |
98.73% | view → |
| 2026-03-03 | Peptide Partners | Retatrutide | 7.0B+ |
99.90% | view → |
| 2026-03-02 | Peptide Partners | Retatrutide | 9.3B+ |
99.90% | view → |
| 2026-02-15 | Peptide Partners | Ipamorelin | 9.8A |
99.74% | view → |
Methodology
Composite: lab quality (40%) + sentiment (20%) + COA transparency (15%) + reliability (15%) + verified $/mg (10%). We do not run lab tests — every datapoint traces to a third party.
Read the full methodology →