Research Overview

GHK-Cu

GHK-Cu (Copper Peptide)

A naturally occurring copper-binding tripeptide studied extensively in cellular and dermal research.

What It Is

GHK-Cu is the copper(II) complex of the tripeptide glycyl-L-histidyl-L-lysine (GHK). The naturally occurring form was first isolated from human plasma, and its concentration in biological fluids has been reported in the literature to decline with age, which is part of why it draws sustained research interest in cellular-aging and dermal-repair models.

As a copper-chelating tripeptide, GHK-Cu is chemically distinct from larger signaling peptides. It is one of the most extensively published peptides in the gene-expression and wound-model literature, with research spanning several decades.

Mechanism in the Research Literature

The literature describes GHK-Cu's primary research role as a copper-delivery and gene-expression modulator. Published work has associated it with upregulation of extracellular matrix components (such as collagen and glycosaminoglycans) in cell culture and with modulation of gene expression patterns tied to tissue-remodeling processes.

GHK-Cu is also studied for antioxidant-related activity, with research examining its interaction with copper-dependent enzymatic processes and reactive oxygen species handling in vitro.

Why Purity Verification Matters Here

Because GHK-Cu's activity is tied to the intact copper-tripeptide complex, verifying identity (not just amino-acid purity) matters more here than for many peptides: mass spectrometry confirms the copper complex is correctly formed rather than free peptide and dissociated copper. A Certificate of Analysis that confirms both HPLC purity and correct molecular identity is the standard for treating a GHK-Cu batch as a reliable reference material.

Third-party tested. Lot-matched. No exceptions.

Every unrl batch is characterized by independent third-party testing before it ships, not just an in-house spec sheet. Each Certificate of Analysis is tied to the lot number printed on the vial, so what you're holding matches a specific, published result rather than a generic average.

Independent lab, not manufacturer self-testing
HPLC purity + mass spectrometry identity confirmation
Lot-specific CoA, matched to the vial in hand
Published and searchable in the public COA library

View the COA Library

Research Use Only

This page is provided for research and educational purposes only. The compound discussed is a research reference standard, not a dietary supplement, drug, or article for human or veterinary use. Nothing on this page is medical advice, dosing guidance, or a claim of safety or efficacy. No statement has been evaluated by the FDA.

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