GHK-Cu COA and purity data: 13 third-party test results
Across 13 third-party test results for GHK-Cu, issued by independent laboratories between Feb 11, 2026 and Sep 3, 2026, documented HPLC purity ranged from 99.54% to 99.95%, with a mean of 99.79% and a median of 99.79%. The issuing laboratories were Accurate Test Labs and Freedom Diagnostics. Every certificate is published in full and linked below.
Every GHK-Cu result on one scale
Every GHK-Cu COA, newest first
| Report date | HPLC purity | Size | Laboratory | Identity (MS) | Certificate |
|---|---|---|---|---|---|
| Sep 3, 2026 | 99.93% | 100mg | Accurate Test Labs | Confirmed | Certificate (PDF) |
| Sep 3, 2026 | 99.92% | 50mg | Accurate Test Labs | Confirmed | Certificate (PDF) |
| Aug 18, 2026 | 99.88% | 100mg | Accurate Test Labs | Confirmed | Certificate (PDF) |
| Aug 14, 2026 | 99.59% | 50mg | Accurate Test Labs | Confirmed | Certificate (PDF) |
| Jun 22, 2026 | 99.95% | 50mg | Freedom Diagnostics | Confirmed | Certificate (PDF) |
| May 12, 2026 | 99.86% | 100mg | Freedom Diagnostics | Confirmed | Certificate (PDF) |
| May 11, 2026 | 99.75% | 50mg | Freedom Diagnostics | Confirmed | Certificate (PDF) |
| Apr 20, 2026 | 99.90% | 100mg | Freedom Diagnostics | Confirmed | Certificate (PDF) |
| Mar 24, 2026 | Image on file | 100mg | Third-party lab | Certificate (PDF) | |
| Mar 10, 2026 | 99.78% | Freedom Diagnostics | Certificate (PDF) | ||
| Feb 18, 2026 | 99.79% | 50mg | Freedom Diagnostics | Certificate (PDF) | |
| Feb 11, 2026 | 99.538% | 50mg | Freedom Diagnostics | Certificate (PDF) | |
| Not stated | 99.786% | 100mg | Freedom Diagnostics | Confirmed | Certificate (PDF) |
| Not stated | 99.634% | 100mg | Third-party lab | Confirmed | Certificate (PDF) |
Purity is the main-peak area percentage by high-performance liquid chromatography as reported by the laboratory. Identity was confirmed by mass spectrometry on 10 of these certificates. Figures are computed from the public archive each time the site is built, and nothing is left out: low results stay in the table. How to read a COA.
More on GHK-Cu
- GHK-Cu in the catalogSizes, price and the current certificate
- GHK-Cu research monographStructure, mechanisms studied and molecular data
- Verify a batchMatch a vial label to its certificate
- All lab resultsThe aggregate dataset across every compound
Where can I see the COA for GHK-Cu?
Every GHK-Cu certificate Eon Peptides holds is published on this page, 13 of them with a numeric HPLC result, each linking to the laboratory's own PDF. There is no login and no request form. The batch code on a vial label resolves to its certificate on the verify page.
Is GHK-Cu third-party tested?
Yes. Testing is carried out by Accurate Test Labs and Freedom Diagnostics, not by Eon Peptides, and the issuing laboratory is printed on every certificate. Across 13 published results the documented HPLC purity runs 99.54% to 99.95%.
What purity has GHK-Cu tested at?
In 13 documented third-party HPLC results on file, GHK-Cu tested between 99.54% and 99.95%, with a mean of 99.79%. Each result is a main-peak percentage reported by the laboratory named on that certificate.
Who tested GHK-Cu?
Accurate Test Labs and Freedom Diagnostics. The laboratory is printed on each certificate; Eon Peptides does not test its own product.
How do I match a vial of GHK-Cu to its certificate?
Enter the batch code from the vial label on the verify page, or open the certificate for the matching report date in the table on this page.
For research use only. Not for human or veterinary use. These are analytical results for research materials and say nothing about use in people or animals.