ZePeptide: Lab Test Results
Independent Certificates of Analysis aggregated from public lab results. Not affiliated with or paid by ZePeptide.
49
CoAs on file
99.62%
Avg reported purity
6
Compounds tested
Jun 16, 2026
Latest test
Results by compound
| Compound | CoAs | Avg purity | Latest |
|---|---|---|---|
| Retatrutide | 24 | 99.6% | Jun 16, 2026 |
| BPC-157 | 6 | 99.62% | Apr 27, 2026 |
| GHK-Cu | 6 | 99.78% | May 12, 2026 |
| Tesamorelin | 5 | 99.28% | May 5, 2026 |
| Tirzepatide | 4 | 99.75% | May 27, 2026 |
| TB-500 | 4 | 99.9% | Jun 7, 2026 |
Recent CoAs
| Compound | Batch | Purity | Lab | Tested | |
|---|---|---|---|---|---|
| Retatrutide | n/a | 99.8% | Lab G | Jun 16, 2026 | verify |
| Retatrutide | n/a | n/a | Lab E | Jun 14, 2026 | verify |
| Retatrutide | n/a | n/a | Lab G | Jun 7, 2026 | verify |
| Retatrutide | n/a | 99.7% | Lab G | Jun 7, 2026 | verify |
| TB-500 | n/a | n/a | Lab G | Jun 7, 2026 | verify |
| Tirzepatide | n/a | 99.9% | Lab E | May 27, 2026 | verify |
| Retatrutide | n/a | 99.9% | Lab E | May 27, 2026 | verify |
| Tirzepatide | 258007 | 99.9% | Lab E | May 19, 2026 | verify |
| Retatrutide | n/a | 99.9% | Lab E | May 19, 2026 | verify |
| GHK-Cu | n/a | 99.3% | Lab E | May 12, 2026 | verify |
| Retatrutide | n/a | 99.9% | Lab E | May 7, 2026 | verify |
| Retatrutide | n/a | 99.5% | Lab G | May 7, 2026 | verify |
| Tesamorelin | n/a | 99.9% | Lab E | May 5, 2026 | verify |
| Retatrutide | n/a | 99.9% | Lab E | May 4, 2026 | verify |
| TB-500 | n/a | 99.9% | Lab E | Apr 27, 2026 | verify |
| TB-500 | n/a | 99.9% | Lab E | Apr 27, 2026 | verify |
| Retatrutide | n/a | 99.9% | Lab E | Apr 27, 2026 | verify |
| Retatrutide | n/a | 99.9% | Lab E | Apr 27, 2026 | verify |
| Retatrutide | n/a | 99.9% | Lab E | Apr 27, 2026 | verify |
| BPC-157 | n/a | 99.6% | Lab E | Apr 27, 2026 | verify |
| GHK-Cu | n/a | 99.9% | Lab E | Apr 27, 2026 | verify |
| Tesamorelin | n/a | 99.9% | Lab E | Apr 27, 2026 | verify |
| Retatrutide | n/a | 99.7% | Lab G | Apr 26, 2026 | verify |
| Tesamorelin | n/a | 99.6% | Lab G | Apr 26, 2026 | verify |
| Retatrutide | n/a | 99.9% | Lab E | Apr 22, 2026 | verify |
Showing 25 most recent of 49. Search the full database on the CoA page.
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<a href="https://ascendpeptide.org/coa/vendor/zepeptide/" rel="noopener"> <img src="https://ascendpeptide.org/coa/badge/zepeptide.svg" alt="ZePeptide: lab tested, 49 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.