Buy GHK-Cu 2026 — Copper Tripeptide for Collagen & MMP Research (EU)

Peptide Research · 28 June 2026 · 12 min read · Research Use Only

GHK-Cu at a glance

What is GHK-Cu?

GHK-Cu is a complex of the naturally occurring tripeptide Glycyl-L-Histidyl-L-Lysine (GHK) and a copper(II) ion. The tripeptide binds copper with high affinity; the resulting complex is recognisable by its characteristic blue colour. It is supplied as a stable lyophilised product in a sealed vial (50 mg). In laboratory research, GHK-Cu serves as a well-characterised reference substance. The CAS number and molecular formula are documented in the batch-specific certificate of analysis.

Molecular profile & target structure

GHK (sequence Gly-His-Lys) is a tripeptide whose histidine residue, together with the N-terminus, forms a coordination site for copper(II). In the literature, GHK-Cu is therefore described as a model system for copper coordination in small peptides described. The combination of a defined sequence, high copper affinity, and good analytical characterisation makes the complex a frequently used reference in matrix and cell biology study models.

What in-vitro and animal model studies document

The following summary reflects only what is described in the publicly accessible preclinical literature – it is not a statement about an effect or suitability in humans.

• Collagen and matrix models: Published in-vitro studies on fibroblast cultures investigate GHK-Cu in relation to collagen synthesis and the extracellular matrix.
• MMP/TIMP balance Several studies.
• Copper transport GHK-Cu is used as a model for the binding and transport of copper(II) in biochemical studies.
• Gene expression screens: Individual exploratory studies describe changes in expression patterns in cultured cells.

These observations come from in vitro and animal models. They justify the research interest in GHK-Cu, but provide no information about safety, efficacy, or use outside of laboratory research.

Purity, COA & Analytical Testing

Purity and identity are the two values that count. HPLC demonstrates purity (target value ≥ 99 %), LC-MS confirms the identity via molecular mass. Both values are listed on the batch-related COA. We explain how to read such a certificate in Understanding and reading a Certificate of Analysis (COA); the procedures themselves in Peptide Purity: HPLC and LC-MS Explained.

Storage & Handling

As a lyophilisate, GHK-Cu is stable when stored is kept cool, dry and protected from light and stored – ideally at -20°C for longer storage. Please refer to the COA for batch-specific information. Principles: Storing and Handling Research Peptides.

Buying GHK-Cu in the EU – what matters

What matters is not the price, but this: Does the label match the contents? Here's what BlitzLab delivers on:

• Batch-specific COA from a third-party laboratory – HPLC (purity) and LC-MS (identity), carried out externally, not by us.
• EU Shipping, discreetly packaged, with tracking – usually 2–5 working days.
• Transparent RUO stance – clear labelling, complete Compliance page, no claims of efficacy or cure.

What else to look out for with a reputable provider: 7-point checklist.

Frequently asked questions about buying GHK-Cu

Note on Sources & RUO

This guide summarises publicly available, preclinical research literature (in vitro and animal models) on GHK-Cu. The accompanying Certificate of Analysis is always authoritative for the identity, CAS number, molecular formula, and purity of the supplied batch. All information is provided for research purposes only (Research Use Only) and does not constitute medical advice, dosage, or application recommendations.