Trust the Data. Not the Source.
| Vendor / Client | Tests | Best Purity | Latest Test |
|---|---|---|---|
| Sigma Audley | 2 | 99.42% | 28 APR 2025 |
| Qingdao Sigma Chemical | 2 | 99.23% | 21 OCT 2025 |
| Boris Boot info@rcpeptides.nl | 2 | 99.36% | 10 OCT 2025 |
| Tianjin Cangtu | 1 | 99.92% | 05 MAR 2025 |
| Homopeptide.com | 1 | 99.58% | 05 JAN 2026 |
| Crystal Peptides | 1 | 99.77% | 07 JAN 2026 |
| Penguin Peptides | 1 | 99.26% | 28 JUL 2025 |