Expert Peptide: Lab Test Results
Independent Certificates of Analysis aggregated from public lab results. Not affiliated with or paid by Expert Peptide.
13
CoAs on file
99.88%
Avg reported purity
3
Compounds tested
Sep 24, 2026
Latest test
Results by compound
| Compound | CoAs | Avg purity | Latest |
|---|---|---|---|
| Retatrutide | 6 | 99.88% | Sep 24, 2026 |
| Tirzepatide | 4 | 99.88% | Aug 3, 2026 |
| GHK-Cu | 3 | 99.9% | Jul 23, 2026 |
Recent CoAs
| Compound | Batch | Purity | Lab | Tested | |
|---|---|---|---|---|---|
| Retatrutide | n/a | 99.9% | Lab L | Sep 24, 2026 | verify |
| Tirzepatide | n/a | 99.9% | Lab E | Aug 3, 2026 | verify |
| GHK-Cu | n/a | 99.9% | Lab E | Jul 23, 2026 | verify |
| Retatrutide | n/a | 99.9% | Lab E | Jul 22, 2026 | verify |
| Tirzepatide | n/a | 99.9% | Lab E | Jul 22, 2026 | verify |
| Retatrutide | n/a | 99.8% | Lab G | Jun 26, 2026 | verify |
| Tirzepatide | n/a | 99.8% | Lab G | Jun 16, 2026 | verify |
| Retatrutide | n/a | 99.9% | Lab E | Jun 12, 2026 | verify |
| GHK-Cu | n/a | 99.9% | Lab E | May 31, 2026 | verify |
| Tirzepatide | AYK0024 | 99.9% | Lab E | Apr 23, 2026 | verify |
| Retatrutide | MFD-1/22/2026 RT260120-354 | 99.9% | Lab G | Mar 25, 2026 | verify |
| Retatrutide | n/a | 99.9% | Lab E | Mar 12, 2026 | verify |
| GHK-Cu | n/a | 99.9% | Lab E | Mar 12, 2026 | verify |
Showing 13 most recent of 13. 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.