Independent Certificates of Analysis aggregated from public lab results. Not affiliated with or paid by LN Peptides.
| Compound | CoAs | Avg purity | Latest |
|---|---|---|---|
| Tirzepatide | 14 | 99.71% | Apr 27, 2026 |
| Retatrutide | 10 | 99.79% | Jun 3, 2026 |
| Tesamorelin | 9 | 91.67% | Jun 14, 2026 |
| Ipamorelin | 2 | 99.84% | Jan 25, 2026 |
| Mazdutide | 1 | 99.69% | Oct 8, 2025 |
| Compound | Batch | Purity | Lab | Tested | |
|---|---|---|---|---|---|
| Tesamorelin | -- | -- | Lab E | Jun 14, 2026 | verify |
| Retatrutide | -- | 99.7% | Lab G | Jun 3, 2026 | verify |
| Retatrutide | -- | 99.9% | Lab E | May 31, 2026 | verify |
| Retatrutide | -- | 99.9% | Lab E | May 12, 2026 | verify |
| Tirzepatide | -- | 99.5% | Lab E | Apr 27, 2026 | verify |
| Tesamorelin | -- | 99.9% | Lab E | Mar 5, 2026 | verify |
| Tesamorelin | -- | 99.9% | Lab E | Mar 5, 2026 | verify |
| Tesamorelin | -- | 98.47% | Lab E | Mar 1, 2026 | verify |
| Tesamorelin | -- | 98.88% | Lab E | Feb 25, 2026 | verify |
| Tesamorelin | -- | 99.72% | Lab E | Feb 25, 2026 | verify |
| Tirzepatide | -- | 99.73% | Lab E | Feb 19, 2026 | verify |
| Retatrutide | -- | 99.7% | Lab G | Feb 19, 2026 | verify |
| Tirzepatide | -- | 99.8% | Lab E | Feb 17, 2026 | verify |
| Tirzepatide | -- | 99.8% | Lab G | Feb 14, 2026 | verify |
| Retatrutide | -- | 99.8% | Lab G | Feb 14, 2026 | verify |
| Retatrutide | -- | 99.9% | Lab E | Feb 10, 2026 | verify |
| Ipamorelin | -- | 99.9% | Lab E | Jan 25, 2026 | verify |
| Tirzepatide | -- | 99.95% | Lab E | Jan 18, 2026 | verify |
| Tirzepatide | -- | 99.8% | Lab G | Jan 14, 2026 | verify |
| Retatrutide | -- | 99.8% | Lab G | Jan 14, 2026 | verify |
| Tirzepatide | -- | 99.8% | Lab G | Jan 14, 2026 | verify |
| Retatrutide | -- | 99.8% | Lab G | Jan 14, 2026 | verify |
| Tirzepatide | -- | 99.6% | Lab E | Dec 29, 2025 | verify |
| Tirzepatide | -- | 99.82% | Lab E | Dec 16, 2025 | verify |
| Tirzepatide | -- | 99.74% | Lab E | Dec 16, 2025 | verify |
Showing 25 most recent of 36. Search the full database on the CoA page.
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<a href="https://ascendpeptide.org/coa/vendor/ln-peptides/" rel="noopener"> <img src="https://ascendpeptide.org/coa/badge/ln-peptides.svg" alt="LN Peptides: lab tested, 36 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.