Trust the Data. Not the Source.
| Vendor / Client | Tests | Best Purity | Latest Test |
|---|---|---|---|
| Sigma Audley | 3 | 99.91% | 23 JUL 2025 |
| Shanghai Senria Tech | 2 | 99.64% | 26 JUN 2025 |
| Shanghai Fushida Chemical | 2 | 99.67% | 29 JUL 2025 |
| Penguin Peptides | 2 | 99.67% | 13 OCT 2025 |
| Zhuzhou Lusong Zhongtuo(ZLZ peptides) | 1 | 99.35% | 16 JUN 2025 |
| liuquanqun@gmail.com | 1 | 99.62% | 03 NOV 2025 |
| Coastal Peptides | 1 | 99.38% | 10/01/25 |
| Angel Shanghai Chemical | 1 | 98.94% | 24 JAN 2025 |
| Tianjin Cangtu | 1 | 99.80% | 05 MAR 2025 |
| Shanghai ZYH Biotechnology | 1 | 99.83% | 26 JUN 2025 |
| Qing Li Peptides | 1 | 98.59% | 07 OCT 2025 |
| Uther | 1 | 99.83% | 25 NOV 2025 |
| Genpeptide | 1 | 99.73% | 03 JAN 2026 |
| Orbitrex Peptides | 1 | 99.89% | 08 JUL 2025 |
| CHP | 1 | 99.76% | 09 JAN 2026 |
| Homopeptide.com | 1 | 99.41% | 05 JAN 2026 |
| crystalpeptides.eu | 1 | 99.01% | 08 DEC 2025 |
| Nexaph | 1 | 99.80% | 10 DEC 2025 |
| cellpept.eu | 1 | 99.37% | 21 OCT 2025 |
| utherpeptide.com | 1 | N/A | 19 JAN 2026 |