Zen Peptides: Lab Test Results
Independent Certificates of Analysis aggregated from public lab results. Not affiliated with or paid by Zen Peptides.
36
CoAs on file
99.2%
Avg reported purity
7
Compounds tested
Sep 24, 2026
Latest test
Results by compound
| Compound | CoAs | Avg purity | Latest |
|---|---|---|---|
| Retatrutide | 11 | 99.54% | Sep 24, 2026 |
| Tesamorelin | 6 | 96.86% | Feb 19, 2026 |
| Tirzepatide | 6 | 99.8% | Sep 24, 2026 |
| GHK-Cu | 4 | 99.95% | Dec 17, 2025 |
| BPC-157 | 3 | 99.68% | Mar 4, 2026 |
| NAD+ | 3 | 99.73% | Mar 18, 2026 |
| Ipamorelin | 3 | 99.51% | Jan 7, 2026 |
Recent CoAs
| Compound | Batch | Purity | Lab | Tested | |
|---|---|---|---|---|---|
| Tirzepatide | 20260717-02-01 | 99.9% | Lab E | Sep 24, 2026 | verify |
| Retatrutide | 20260724-7P | 99.9% | Lab E | Sep 24, 2026 | verify |
| Tirzepatide | 20260717-02-01 | 99.9% | Lab E | Aug 26, 2026 | verify |
| Retatrutide | n/a | n/a | Lab G | Jul 20, 2026 | verify |
| NAD+ | n/a | 99.5% | Lab E | Mar 18, 2026 | verify |
| BPC-157 | n/a | 99.84% | Lab E | Mar 4, 2026 | verify |
| Tirzepatide | TR60-100 | 99.9% | Lab E | Mar 4, 2026 | verify |
| Retatrutide | n/a | 99.78% | Lab E | Mar 3, 2026 | verify |
| Retatrutide | n/a | 99.81% | Lab E | Mar 3, 2026 | verify |
| NAD+ | NAD1000-100 | 99.9% | Lab G | Mar 1, 2026 | verify |
| Tirzepatide | Batch # 1 | 99.81% | Lab E | Feb 20, 2026 | verify |
| Tesamorelin | n/a | 98% | Lab E | Feb 19, 2026 | verify |
| NAD+ | n/a | 99.78% | Lab E | Feb 19, 2026 | verify |
| Tesamorelin | TSM10 | 99.7% | Lab G | Feb 15, 2026 | verify |
| Retatrutide | n/a | 99.7% | Lab G | Feb 10, 2026 | verify |
| Tesamorelin | n/a | 85.72% | Lab E | Jan 19, 2026 | verify |
| Retatrutide | n/a | 99.8% | Lab G | Jan 7, 2026 | verify |
| Ipamorelin | n/a | 99.5% | Lab G | Jan 7, 2026 | verify |
| Retatrutide | n/a | 99.6% | Lab G | Jan 1, 2026 | verify |
| Tesamorelin | n/a | 99.87% | Lab E | Dec 17, 2025 | verify |
| GHK-Cu | n/a | 99.95% | Lab E | Dec 17, 2025 | verify |
| Tirzepatide | n/a | 99.5% | Lab G | Dec 13, 2025 | verify |
| Retatrutide | n/a | 99.2% | Lab G | Dec 10, 2025 | verify |
| GHK-Cu | n/a | 99.95% | Lab E | Nov 18, 2025 | verify |
| Tesamorelin | n/a | 98.4% | Lab E | Nov 17, 2025 | verify |
Showing 25 most recent of 36. Search the full database on the CoA page.
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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.