Reta-Peptide
GHK-Cu
Finnrick tested 4 samples of GHK-Cu from Reta-Peptide between 16 Jul 2025 and 4 Sep 2025. 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
Reta-Peptide
GHK-Cu
Tested 4 Samples
Last test 4 Sep 2025
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 Reta-Peptide
Samples are tested in commercial labs
Tests Count
4
Scores
AVGMINMAX
Last
4 Sep 2025
First
16 Jul 2025
| Quantity | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Test Date | Certificate | Test Score | Label | Tested | Difference | Purity | Batch ID | Container | Tested At | Sent By |
| 4 Sep 2025 | View | 50mg | 48.600mg | -2.8% | 99.95% | (no batch ID) | Clear Label / Silver Crimp / Blue Cap | Lab E | Public | |
| 4 Aug 2025 | View | 50mg | 58.300mg | +16.6% | 99.85% | (no batch ID) | No Label / Silver Crimp / Blue Cap | Lab E | Public | |
| 4 Aug 2025 | View | 50mg | 54.900mg | +9.8% | 99.88% | (no batch ID) | No Label / Silver Crimp / Blue Cap | Lab E | Public | |
| 16 Jul 2025 | View | 100mg | 80.550mg | -19.4% | 99.87% | (no batch ID) | No Label / Silver Crimp / Blue Cap | Lab F | Public | |