GHK-Cu 100.0% Purity — Zlz PeptideCertificate of Analysis · Independent third-party lab result
This COA was tested by an independent third-party lab, LabE. It reports 99.95% purity for GHK-Cu via HPLC and mass quantification. The tested quantity of 111mg showed an 11% overage compared to the 100mg label. Endotoxin status is unknown. The test is older (6-12 months) and lacks a batch ID.
- no endotoxin test
- older (6-12 months)
- no batch ID
- Test date
- 2025-10-03
- Testing lab
- LabE
- Batch / lot
- (no batch ID)
- Quantity
- 111mg
- Endotoxins
- —
- Assay method
- HPLC + mass quantification + endotoxins
- Test score
- 6.3
- Label dose
- 100mg
How this result compares
This GHK-Cu certificate's tested purity of 99.95% ranks higher than 91% of the 2433 GHK-Cu certificates with a purity result we have catalogued (median 99.82%).
Tested 2025-10-03 by LabE via HPLC + mass quantification + endotoxins. This test is newer than 13% of our catalogued GHK-Cu certificates.
Zlz Peptide has 274 certificates in our corpus, including 14 for GHK-Cu at a median tested purity of 99.91%.
Test report image
Finnrick
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