Glossary · 2026-09-24
By Alice Kay · Last reviewed 24 Sep 2026
Copper peptide, laboratory definition
Research-use notice: This article summarizes published scientific literature for educational purposes. It is not medical advice and does not provide dosing, administration or human-use information. Findings described in the literature do not apply to any BlueNex Labs product, which is supplied only for in-vitro laboratory research and not for human or animal use.
Copper peptide, in this catalogue, means glycyl-L-histidyl-L-lysine coordinated to copper(II): GHK-Cu. The peptide portion is three residues. The complex is the research ligand used in extracellular-matrix and gene-expression assays. A copper salt is not that complex, and the metal-free tripeptide is not that complex unless the lot report says so.
For the class page, see copper peptides. The 50 mg listing is the single-complex SKU. GLOW and KLOW are multi-peptide fills. Their certificates, when published, are their own rows. The GHK-Cu library entry does not document those blends. Read What is GHK-Cu? for the sequence note.
Frequently asked questions
- Does a GHK-Cu Certificate of Analysis cover GLOW or KLOW?
- No. GLOW 70 mg and KLOW 80 mg are separate SKUs. Open each blend's own certificate when one is published.
Research use only. BlueNex Labs does not provide medical or veterinary advice. Confirm your institution’s policies before purchase. How a comparison or class note is checked sits on documentation standards. Articles are written and reviewed by Alice Kay, Ph.D.