Zztai Peptide
GHK-Cu
Finnrick tested 4 samples of GHK-Cu from Zztai Peptide between 4 Nov 2025 and 15 Feb 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
Zztai Peptide
GHK-Cu
Tested 4 Samples
Last test 15 Feb 2026
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Samples are tested in commercial labs
Tests Count
4
Scores
AVGMINMAX
Last
15 Feb 2026
First
4 Nov 2025
| Quantity | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Test Date | Certificate | Test Score | Label | Tested | Difference | Purity | Batch ID | Container | Tested At | Sent By |
| 15 Feb 2026 | View | 50mg | 40.5mg | -19.0% | 99.70% | (no batch ID) | No Label / Silver Crimp / Red Cap | Lab G | Public | |
| 15 Jan 2026 | View | 50mg | 46.4mg | -7.2% | 99.95% | (no batch ID) | No Label / Silver Crimp / White Cap | Lab E | Public | |
| 6 Jan 2026 | View | 50mg | 50.9mg | +1.8% | 99.95% | (no batch ID) | No Label / Silver Crimp / Clear Blue Cap | Lab E | Public | |
| 4 Nov 2025 | View | 50mg | 49.7mg | -0.6% | 99.95% | (no batch ID) | No Label / Silver Crimp / Blue Cap | Lab E | Public | |