GHK-Cu 50
GHK-Cu is a naturally occurring copper-binding tripeptide (glycyl-L-histidyl-L-lysine) first isolated from human plasma by Loren Pickart in 1973. This is the 50 mg presentation.
- Copper-binding tripeptide, first isolated 1973
- Studied in collagen synthesis, angiogenesis and antioxidant gene expression
- 50 mg lyophilised pen
- Presentation
- 50 mg Pen
- Purity
- 99.76%
Sold strictly for in-vitro laboratory research. Not for human or veterinary consumption.
Research background
GHK-Cu was noticed because plasma from younger donors behaved differently from older donors in liver tissue culture. The active fraction was isolated as a small tripeptide that binds copper(II) with high affinity.
Since then it has been studied for wound healing, collagen and elastin synthesis, angiogenesis, and broad effects on gene expression — including antioxidant and DNA-repair-associated pathways. Its size and copper affinity make it a common reference compound in dermal research.
Handling and storage
GHK-Cu solutions carry a characteristic blue colour from the bound copper ion; loss of that colour can indicate degradation or copper displacement.
Lyophilised material is stable for extended periods when kept sealed, dry, and away from light. Long-term storage in research settings is commonly at -20°C, with short transit at ambient temperature considered acceptable for lyophilised powders.
Once reconstituted, solutions are refrigerated at 2-8°C and used within a limited window, as peptides in aqueous solution degrade far faster than in powder form. Repeated freeze-thaw cycles are avoided.
Reconstitution notes
Peptides in this catalogue are supplied lyophilised. In laboratory settings they are typically reconstituted with bacteriostatic or sterile water added slowly down the inside wall of the vial, never injected directly onto the powder pellet.
The vial is then left to dissolve on its own, or swirled gently. Vigorous shaking is avoided because mechanical shear can denature peptide chains and reduce measurable potency in subsequent assays.
Purity and batch testing
Every batch we list is accompanied by third-party analytical testing. The Certificate of Analysis linked on this page shows the lot number, HPLC purity trace, and mass spectrometry identity confirmation for the exact batch held in stock.
Purity figures quoted on this page are taken directly from that report rather than from a manufacturer datasheet, so what you read here matches the vial that ships.
Frequently asked questions
- What is the difference between the 50 mg and 100 mg GHK-Cu listings?
- Only the quantity of lyophilised peptide per pen. The compound, batch testing standard and handling requirements are identical.
- Is this product for human consumption?
- No. Everything in the Fox Peptides catalogue is supplied strictly for in-vitro laboratory research use. It is not a medicine and is not for human or veterinary consumption.
- Do you provide a Certificate of Analysis?
- Yes. Each batch is third-party tested and the Certificate of Analysis for the lot currently in stock is linked directly on this page, showing HPLC purity and mass spectrometry identity confirmation.
- Where do you ship and how long does delivery take?
- We ship across the UK with tracked delivery. Orders are dispatched from the UK once payment clears, so there are no customs delays for UK customers.
- How do I pay?
- Checkout uses secure open-banking bank transfer. You approve the payment inside your own banking app, and your order is confirmed automatically once the transfer clears.