GHK-Cu — Penguin PeptidesCertificate of Analysis · Independent third-party lab result
This COA's source attribution is incomplete, derived from a blend test. It reports a quantity of 64.3mg against a 50mg label, indicating a 28.6% deviation. Purity and endotoxin status are unknown. The test date is recent (3-6 months old). Customers should treat this as one data point, not as confirmation.
- unknown purity
- unknown endotoxin status
- quantity deviation (28.6%)
- Test date
- 2026-01-21
- Testing lab
- Janoshik
- Batch / lot
- —
- Quantity
- —
- Endotoxins
- —
- Assay method
- —
- Label dose
- 80mg
How this result compares
We have catalogued 2867 GHK-Cu certificates; across the 2587 with a purity result the median tested purity is 99.82%.
Tested 2026-01-21 by Janoshik. This test is newer than 34% of our catalogued GHK-Cu certificates.
Penguin Peptides has 58 certificates in our corpus, including 4 for GHK-Cu at a median tested purity of 99.97%.
Test report image
janoshik_blend_derived
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