GHK-Cu is a naturally occurring copper-binding tripeptide studied for its role in cellular signaling, extracellular matrix processes, tissue remodeling, and oxidative stress pathways.
Copper-Binding Peptide
Studied for its ability to bind copper ions and participate in copper-dependent biological signaling.
Tissue Remodeling Research
Investigated in experimental models involving tissue remodeling and cellular repair processes.
Extracellular Matrix Research
Researched for its relationship with collagen, extracellular matrix components, and cellular signaling pathways.
Oxidative Stress Research
Used in laboratory studies examining oxidative stress, cellular responses, and related biochemical mechanisms.
What GHK-Cu is
GHK is three amino acids — glycine, histidine, lysine. On its own it is an unremarkable tripeptide. Bound to copper(II) it becomes GHK-Cu, and essentially the entire research literature concerns the complex rather than the free peptide.
The distinction is not pedantic. A coordination complex is a defined chemical species in which the metal is held by the ligand. Free peptide plus a copper salt is not the same material, and studies of one do not transfer to the other.
Handling a copper complex
The blue colour is the copper, and it is the most useful handling cue you have: it is a property of the intact complex. Colour that looks wrong is worth a question in a way it would not be for a colourless peptide.
Otherwise the usual rules apply — cold, dark, reconstituted slowly down the vial wall without shaking. Because the complex involves a metal centre, it is worth being deliberate about what else goes into the same solution.
Storage
Sealed and lyophilised: refrigerated, protected from light. In solution: refrigerated, and treat time at room temperature as a cost. Avoid repeated freeze-thaw once reconstituted.
What ships, and what is on the certificate
The vial ships sealed as it was filled. Every compound in the catalogue is tested by an outside laboratory — Vanguard Laboratory in Olympia, Washington — and the certificate is published in full rather than summarised.
The certificate reports chromatographic purity by HPLC with the chromatogram visible, the measured quantity in milligrams, and an endotoxin result by LAL. Measured quantity usually reads slightly above the label, which is normal: fills are targeted high so every vial meets its stated content.
Frequently asked questions
Is GHK-Cu just GHK with copper added?
Not in the sense of a mixture. It is a coordination complex, a defined species in which copper(II) is held by the peptide. Free peptide plus free copper salt is not the same material.
Why is it blue?
The colour comes from the copper(II) centre and is a property of the intact complex, which makes it a useful visual cue that other peptides do not give you.
How should it be reconstituted?
Add bacteriostatic water slowly down the inside wall of the vial, then let it dissolve without shaking. The reconstitution calculator will convert vial mass and water volume into a concentration and a syringe reading.
Does it come with a certificate of analysis?
Yes. Every compound is tested by an independent laboratory and the full certificate, chromatogram included, is published on the site rather than summarised.
Is this a medicine?
No. It is sold for in-vitro laboratory research use only. It is not a drug, supplement or cosmetic, and is not for human or veterinary use.
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