purepeptides.bio
B2CPublicly names MZ Biolabs as its third-party testing partner and routes to batch-specific COA/MS/endotoxin documentation via product sitemap image/report assets.
Profile aggregated from Peptigrity — attributed.
AGreat
peptideone Score · 9.7/10
Composite of 1 independent source
Purity 9.7/10
Weighted blend of independent signals — Finnrick safety grade, VialAudit blind-buy audit, and Peptigrity HPLC purity. PeptideBenchmark and the Peptigrity trust score are excluded to avoid double-counting. Attributed to its sources — not our verdict.
Independent test grades (0)
Per Finnrick (independent testing). Attributed — Finnrick's grades, not ours.
| Peptide | Grade | Score |
|---|
Independent HPLC tests (14)
Real third-party HPLC results for this vendor, aggregated from Peptigrity and attributed to the lab that ran each test.
| Peptide | HPLC purity | Lab | Date |
|---|---|---|---|
| Thymosin alpha-1 | 99.57% | MZ Biolabs | — |
| Retatrutide | 99.06% | MZ Biolabs | 2026-03-12 |
| Tirzepatide | 99.88% | MZ Biolabs | 2026-03-12 |
| GHK-Cu | 99.98% | MZ Biolabs | 2026-03-12 |
| Thymosin alpha-1 | 99.67% | MZ Biolabs | 2026-03-12 |
| GHK-Cu | 99.73% | MZ Biolabs | 2026-02-10 |
| Elamipretide | 99.47% |