Trust the Data. Not the Source.
| Vendor / Client | Tests | Best Purity | Latest Test |
|---|---|---|---|
| Sigma Audley | 4 | 99.90% | 31 JUL 2025 |
| Shanghai Senria Tech | 4 | 99.88% | 02 OCT 2025 |
| Peptide Gurus | 3 | 99.64% | 05 AUG 2024 |
| Orbitrex Peptide | 3 | 99.50% | 07 OCT 2025 |
| ModernPeptides.com | 2 | 99.64% | 16 JAN 2026 |
| Edge Peptides | 2 | 100.00% | 31 JAN 2025 |
| Uther | 2 | 99.88% | 10 MAR 2025 |
| Angel Shanghai Chemical | 2 | 99.76% | 23 JAN 2025 |
| Shanghai Fushida Chemical | 2 | 99.58% | 23 JUL 2025 |
| Shanghai Synthesized Peptide Bio-Pharmaceutical | 2 | 99.44% | 18 NOV 2025 |
| Penguin Peptides | 2 | 99.73% | 13 OCT 2025 |
| XT Peptides | 1 | 99.76% | 29 APR 2025 |
| cdtongtuantai@163.com | 1 | 99.24% | 23 JUN 2025 |
| Peptide Sciences | 1 | 99.55% | 2024-08 |
| Coastal Peptides | 1 | 98.83% | 10/24/25 |
| Lilipetide | 1 | 99.75% | 08 JUL 2025 |
| PeptiAtlas | 1 | 99.53% | 11 JUL 2025 |
| Rayshine Peptides | 1 | 99.53% | 11 JUL 2025 |
| HM Peptide | 1 | 99.83% | 12 AUG 2025 |
| Mandy | 1 | 99.94% | 28 AUG 2025 |
| SH Peptide Ltd | 1 | 99.87% | 10 SEP 2025 |
| liuquanqun@gmail.com | 1 | 99.53% | 03 NOV 2025 |
| Cocer Peptides | 1 | 99.50% | 12 NOV 2025 |
| XYX | 1 | 99.10% | 09 DEC 2024 |
| Qingdao Sigma Chemical | 1 | 96.70% | 16 JAN 2025 |
| Tianjin Cangtu | 1 | 99.23% | 28 FEB 2025 |
| M Peptide Science | 1 | 99.99% | 08 MAY 2025 |
| PTB | 1 | 99.70% | 13 JUN 2025 |
| Homopeptide | 1 | 99.40% | 10 JAN 2025 |
| HK Peptide Ltd | 1 | 99.14% | 18 DEC 2025 |
| WBS Peptide Manufacturers | 1 | 99.19% | 25 APR 2025 |
| Orbitrex Peptides | 1 | 99.02% | 21 DEC 2025 |
| CHP | 1 | 99.31% | 05 JAN 2026 |
| Alpha & Omega Peptide | 1 | 99.23% | 2025-08-08 |
| Huaxia Peptide | 1 | 99.79% | 06 JAN 2026 |
| ellasong968@gmail.com | 1 | 99.45% | 29 OCT 2025 |
| professorpeptides.org | 1 | 99.56% | 16 SEP 2025 |
| info@peptidehackers.com | 1 | 99.31% | 29 MAY 2024 |
| Unknown | 1 | 99.80% | 10 OCT 2025 |
| r/Peptidesource | 1 | 99.20% | 16 FEB 2022 |
| crystalpeptides.eu | 1 | 99.50% | 08 DEC 2025 |
| Peptidegurus | 1 | 99.79% | 07 JAN 2026 |
| InnoPeptide | 1 | 99.74% | 02 JAN 2026 |
| Nexaph | 1 | 99.48% | 10 DEC 2025 |
| cellpept.eu | 1 | 99.88% | 14 NOV 2025 |
| JP | 1 | 99.86% | 01 SEP 2025 |
| Direct Peptides | 1 | 99.15% | 15 DEC 2025 |
| Biolongevity Labs | 1 | N/A | 17 JUL 2025 |
| G | 1 | 99.84% | 22 SEP 2025 |
| Walker Chemicals (WKC) | 1 | 99.70% | 31 DEC 2025 |
| east peptide | 1 | 99.79% | 06 JAN 2026 |