Peptide-S -- Lab Test Results
Independent Certificates of Analysis aggregated from public lab results. Not affiliated with or paid by Peptide-S.
128
CoAs on file
99.32%
Avg reported purity
11
Compounds tested
Mar 9, 2026
Latest test
Results by compound
| Compound | CoAs | Avg purity | Latest |
|---|---|---|---|
| Retatrutide | 42 | 99.64% | Mar 9, 2026 |
| Tirzepatide | 40 | 99.73% | Mar 3, 2026 |
| GHK-Cu | 9 | 99.82% | Feb 21, 2026 |
| Tesamorelin | 7 | 94.52% | Jan 14, 2026 |
| Semaglutide | 6 | 99.52% | Jan 14, 2026 |
| BPC-157 | 5 | 99.7% | Sep 17, 2025 |
| Ipamorelin | 4 | 99.73% | Feb 19, 2026 |
| Cagrilintide | 4 | 99.22% | Nov 24, 2025 |
| Survodutide | 4 | 99.76% | Nov 24, 2025 |
| Mazdutide | 4 | 99.46% | Nov 24, 2025 |
| Sermorelin | 3 | 97.61% | Feb 19, 2026 |
Recent CoAs
| Compound | Batch | Purity | Lab | Tested | |
|---|---|---|---|---|---|
| Retatrutide | -- | 99.9% | Lab E | Mar 9, 2026 | verify |
| Tirzepatide | -- | 99.9% | Lab E | Mar 3, 2026 | verify |
| Tirzepatide | -- | 99.9% | Lab E | Mar 1, 2026 | verify |
| Tirzepatide | -- | 99.9% | Lab E | Mar 1, 2026 | verify |
| Tirzepatide | -- | 99.9% | Lab E | Feb 25, 2026 | verify |
| Retatrutide | -- | 99.41% | Lab E | Feb 21, 2026 | verify |
| GHK-Cu | -- | 99.76% | Lab E | Feb 21, 2026 | verify |
| Sermorelin | -- | 98.7% | Lab E | Feb 19, 2026 | verify |
| Ipamorelin | -- | 99.86% | Lab E | Feb 19, 2026 | verify |
| Retatrutide | -- | 99.7% | Lab G | Feb 14, 2026 | verify |
| Tirzepatide | -- | 99.9% | Lab E | Feb 12, 2026 | verify |
| Tirzepatide | -- | 99.5% | Lab E | Feb 10, 2026 | verify |
| Retatrutide | -- | 99.8% | Lab G | Feb 9, 2026 | verify |
| Retatrutide | -- | 99.7% | Lab E | Jan 25, 2026 | verify |
| Retatrutide | -- | 99.6% | Lab E | Jan 25, 2026 | verify |
| Semaglutide | -- | 99.8% | Lab G | Jan 14, 2026 | verify |
| Tirzepatide | -- | 99.7% | Lab G | Jan 14, 2026 | verify |
| Tesamorelin | -- | 97.18% | Lab E | Jan 14, 2026 | verify |
| Retatrutide | -- | 99.69% | Lab E | Jan 6, 2026 | verify |
| Retatrutide | -- | 99.7% | Lab G | Dec 31, 2025 | verify |
| Tirzepatide | -- | 99.8% | Lab G | Dec 17, 2025 | verify |
| Retatrutide | -- | 99.7% | Lab G | Dec 15, 2025 | verify |
| Tirzepatide | -- | 99.7% | Lab G | Dec 12, 2025 | verify |
| Survodutide | -- | 99.87% | Lab E | Nov 24, 2025 | verify |
| Mazdutide | -- | 98.74% | Lab E | Nov 24, 2025 | verify |
Showing 25 most recent of 128. Search the full database on the CoA page.
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<a href="https://ascendpeptide.org/coa/vendor/peptide-s/" rel="noopener"> <img src="https://ascendpeptide.org/coa/badge/peptide-s.svg" alt="Peptide-S: lab tested, 128 CoAs on file at ASCEND Peptide" width="230" height="54"> </a>
Data comes from publicly posted third-party lab certificates (Janoshik, MZ Biolabs, and others) and community submissions. Purity figures are as reported by the testing lab for the specific batch tested; they are not a guarantee of any other batch. For research and informational purposes only.