How to Store GHK-Cu: Temperature, Shelf Life & Handling
Storage requirements for GHK-Cu follow from what the molecule actually is — tripeptide-copper(ii) complex (gly-his-lys : cu²⁺). The conditions below reflect that chemistry rather than generic peptide guidance.
In plain English
Freezer for the powder, kept dry and dark. Fridge once mixed, two to four weeks. Acidity matters unusually much here, because the copper detaches as conditions turn acidic — and once the copper is gone, you no longer have GHK-Cu.
What GHK-Cu actually is
GHK-Cu is three amino acids holding onto a copper atom — and the copper is part of the molecule, not an additive. It was identified in human blood in 1973, and researchers noticed its levels fall considerably with age. It is the only compound here whose condition you can partly judge by looking at it.
Supplied for laboratory research use only — not for human or animal use.
Third-party tested by HPLC and LC-MS, ≥99% purity, with a Certificate of Analysis on every order. Ships across Canada.
Technical detail below
Storage conditions for GHK-Cu
Why these conditions, specifically
For GHK-Cu, colour is data. A solution that has gone pale, colourless, or green rather than clear blue is signalling that the coordination chemistry has changed, and no peptide-based intuition covers that.
The main route to be aware of: copper dissociation at acidic pH — the complex-specific failure mode, visible as fading or loss of the blue colour.
All 4 degradation routes for GHK-CuFreeze–thaw
Aliquot on reconstitution. Freeze–thaw cycling risks local pH shifts during ice formation, which is a specific hazard for a pH-sensitive coordination complex.
What GHK-Cu is studied for
The best-populated area of the GHK-Cu literature, examined in dermal fibroblast models.
Studied for effects on the MMP/TIMP balance governing matrix turnover.
Copper itself is an angiogenic cofactor, and the complex is studied in that context.
Plasma GHK falls substantially between early and later adulthood, a finding central to research interest in the molecule.
Summarizes published preclinical literature. Provided for research reference only; not a claim of efficacy or a description of human use.
More GHK-Cu reference
Diluent selection, dissolution behaviour, and the calculator preset for this compound.
Which solvents work, why, and what abnormal dissolution behaviour indicates.
The specific chemical routes by which this molecule breaks down, and how to limit each.
Which assays are informative for this molecule, and what to actually check on its COA.
Compound-specific bench practices, and the errors most often made with this molecule.
What to inspect on arrival, and which conditions actually warrant rejecting a vial.
Questions specific to this compound — structure, chemistry, and common misconceptions.
Storage reference for other compounds
GHK-Cu is supplied strictly as a research chemical for in-vitro laboratory and research use only. It is not intended for human or animal consumption, diagnostic, or therapeutic use. This page is educational laboratory-handling reference information — not medical advice, not usage guidance, and not a protocol.