GHK-Cu quality assurance covers both the tripeptide and its coordinated copper, so testing is slightly broader than for a plain peptide.
Peptide purity and identity
HPLC reports purity (understanding HPLC purity) while mass spectrometry confirms the GHK sequence mass — the pairing is explained in HPLC vs. mass spectrometry.
Copper content
Because the copper is part of what defines the complex (structure and synthesis), the copper ratio is part of a complete characterization.
The certificate of analysis
All results appear on the batch certificate of analysis, reinforced by third-party testing.
Product page: GHK-Cu research vials.
Research Use Only. Supplied strictly for laboratory research and development — not for human or veterinary use, consumption, or any therapeutic or diagnostic purpose. This article is research education, not usage guidance.