GHK-Cu 99.7% Purity — Zlz PeptideCertificate of Analysis · Independent third-party lab result
LabG tested this GHK-Cu at 99.7% purity via HPLC and mass quantification. However, the tested quantity was significantly lower than labeled, showing a -27.5% deviation. Endotoxin status is unknown, and no batch ID was provided. The test is recent (under 3 months), and customers can cross-check on the lab's public verification URL.
- significant quantity deviation
- no endotoxin test
- no batch ID
- Test date
- 2026-03-21
- Testing lab
- LabG
- Batch / lot
- (no batch ID)
- Quantity
- 72.5mg
- Endotoxins
- —
- Assay method
- HPLC + mass quantification + endotoxins
- Test score
- 4.4
- Label dose
- 100mg
How this result compares
This GHK-Cu certificate's tested purity of 99.70% ranks higher than 29% of the 2433 GHK-Cu certificates with a purity result we have catalogued (median 99.82%).
Tested 2026-03-21 by LabG via HPLC + mass quantification + endotoxins. This test is newer than 58% 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
Artifact capturedWe have the certificate image (SHA-256 hash captured) — you can verify it loads from the upstream lab and matches the artifact shown here.
Verify on the upstream labSaved source document
sha256:abad129912506891…
— immutable copy held by TitrateLab