Mai Peptide
GHK-Cu
Finnrick tested 4 samples of GHK-Cu from Mai Peptide between 17 Dec 2025 and 6 Jan 2026. Test scores average over 5, no score below 4, and at least 2 tests warrant a tentative Finnrick Rating of C (Okay).
Finnrick Rating™
Tentative Rating
Mai Peptide
GHK-Cu
Tested 4 Samples
Last test 6 Jan 2026
Take Action
Researcher
Request Full Data Access to the Finnrick database of peptide tests.
Free peptide testing
Mail in a sample (US only) to get confidence for the specific vials you have, and contribute to identifying unsafe supply chains, so other people can avoid risky and costly mistakes.
Other GHK-Cu tests from top-rated vendors:
All GHK-Cu tests from Mai Peptide
Samples are tested in commercial labs
Tests Count
4
Scores
AVGMINMAX
Last
6 Jan 2026
First
17 Dec 2025
| Quantity | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Test Date | Certificate | Test Score | Label | Tested | Difference | Purity | Batch ID | Container | Tested At | Sent By |
| 6 Jan 2026 | View | 50mg | 50.3mg | +0.6% | 99.95% | CU50 | No Label / Silver Crimp / White Cap | Lab E | Public | |
| 29 Dec 2025 | View | 100mg | 57.7mg | -42.3% | 99.95% | (no batch ID) | No Label / Silver Crimp / White Cap | Lab E | Public | |
| 29 Dec 2025 | View | 100mg | 86.5mg | -13.5% | 99.95% | (no batch ID) | No Label / Silver Crimp / Blue Cap | Lab E | Public | |
| 17 Dec 2025 | View | 50mg | 49mg | -2.0% | 99.95% | CU50 | No Label / Silver Crimp / Clear Cap | Lab E | Public | |