This independent HPLC with UV detection and mass spectrometry analysis confirms GHK-Cu 50mg from Peptide Supply Co at 99.63% purity. The analysis was conducted by Freedom Diagnostics Testing on February 12, 2026.
GHK-Cu is a copper-binding tripeptide researched for its potential benefits in skin health, collagen synthesis, wound healing, and tissue repair. A purity level of 99.63% demonstrates high-quality synthesis with minimal impurities.
The full certificate of analysis (COA: 2602110267) is available for download on this page.

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