GHK-Cu is the copper complex of glycyl-L-histidyl-L-lysine, a tripeptide that occurs naturally in human plasma and binds copper(II) with remarkable affinity. First isolated in the 1970s, it has one of the longest research histories of any peptide in this catalog, spanning copper transport, extracellular matrix signaling, and gene expression studies. Heartland Bio Labs supplies GHK-Cu for laboratory research in 50mg vials, independently verified for purity and identity.
What GHK-Cu is
The molecule is two parts: the tripeptide GHK, and the copper ion it chelates. The peptide alone is a copper carrier; the complex is what most research examines, because copper delivery is central to the enzymatic processes the literature focuses on. GHK-Cu declines in human plasma with age, an observation that has driven decades of research interest. Structural detail and the research landscape are covered in our GHK-Cu research overview.
The blue vial is not branding
Wondering why this is the one blue vial in the catalog? Our article on why GHK-Cu turns blue walks through the copper coordination chemistry behind the color and why the shade itself is a useful identity cue.
Properly complexed GHK-Cu is unmistakably blue, in powder and especially in solution, because the copper-peptide bond itself absorbs red light. That gives researchers a rare thing in this market: a visible first-pass identity cue. A vial labeled GHK-Cu that reconstitutes colorless or faintly gray is answering your first quality question before any instrument runs. Color is not a substitute for analysis, but with this compound it is an honest tell, and it is one reason uncomplexed or under-complexed material is easy to catch when a supplier publishes real testing.
Product characteristics
- Copper(II) complex of the naturally occurring tripeptide Gly-His-Lys
- Distinctive blue color in powder and solution, from the copper-peptide bond
- Supplied lyophilized in sealed vials
- Available strength: 50mg; 25mg and 100mg appear on the selector with a notify option when not in stock
- HPLC purity and mass spectrometry identity, tested by an independent laboratory
- For laboratory research use only
How this product is verified
GHK-Cu is analyzed by an independent laboratory using HPLC for purity and mass spectrometry for identity, with certificates published in our COA portal. Copper complexes add a wrinkle to analysis that single peptides do not have, which our article on HPLC vs mass spectrometry touches on: purity and identity are separate questions, and both need answering before material enters a study.
GHK-Cu alone or in a blend
GHK-Cu is the largest component by mass in both of our multi-compound blends: 50mg in the GLOW triple blend alongside BPC-157 and TB-500, and 50mg in the KLOW quad blend, which adds KPV. Programs studying copper-peptide signaling in isolation order this vial; programs studying it in combination take a blend and get one fixed ratio and one certificate.
Pricing, storage, and shipping
The 50mg vial is $59, in stock, shipping same-day from the Tulsa, Oklahoma area on orders before 2:00 PM Central. Store lyophilized vials sealed, cool, dry, and away from light; reconstitute with bacteriostatic water and refrigerate the solution. Volume needs run through our wholesale program. Before buying from any supplier, run the checks in our guide to vetting a research peptide supplier.
Reconstitution math
Work out concentration (mg/mL), amount per volume and molarity for any vial size with the GHK-Cu reconstitution calculator, general peptide calculator. For the bench procedure see how to reconstitute peptides.
Research use only
GHK-Cu from Heartland Bio Labs is sold strictly for laboratory research and identification purposes. It is not a drug, it has not been evaluated by the FDA, and it is not for human or veterinary use of any kind. By purchasing, you affirm that you are qualified to handle research compounds and agree to our research use policy.
