GHK-Cu (Copper Peptide) Research Peptide
GHK-Cu is three amino acids joined together, glycine then histidine then lysine, holding a single copper ion.
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Research Use Only · Not for human or veterinary consumption.
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Certificates of Analysis
Every batch is tested by an independent laboratory before release.
Verify Batch. Lot-level COA, Batch DF/GHK/062026. Check the batch number printed on your vial against the certificate below, which reports the tests run on it.
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What is GHK-Cu (Copper Peptide)?
GHK-Cu is three amino acids joined together, glycine then histidine then lysine, holding a single copper ion. The three amino acids on their own are called GHK; add the copper and it becomes GHK-Cu, and the two are different substances that do not always behave the same way. The tripeptide was first found in human blood plasma. Research on it has centered on skin cells and the material they build around themselves, and on lung tissue in animals.
Product information reviewed by Dr. Martina Rossi, PhD
Scientific Contributor and Reviewer · Reviewed
GHK-Cu (Copper Peptide) Research & Reference
What GHK-Cu (Copper Peptide) does in published studies, and how to work with it in the laboratory, are covered in full on two dedicated pages rather than summarised here, so neither the evidence nor the handling detail is cut short.
Technical Specs
Labeled quantity is net peptide content, not gross salt weight.
GHK-Cu (Copper Peptide) Batch Results
Batch DF/GHK/062026
- Laboratory
- Kovera Labs
- Certified
- August 13, 2026
- Sample
- 100 mg vial
- Report
- KVR-2026-2366E9
An independent laboratory, Kovera Labs, tested a sample from this batch. These are the results on its certificate.
Purity
Pass99.796%
RP-HPLC, C18 column, 214 nm
Identity
PassConfirmed
LC-MS
Purity is an HPLC figure: the main peak’s share of everything the detector recorded at one wavelength. It’s not a weight. What a purity figure counts →
Check it with the lab. Kovera Labs’ verification page looks a certificate up by its report number. Product, batch, date and results should match this page.
Chromatogram
RP-HPLC · C18 · DAD 214 nm
Frequently Asked Questions
Is GHK-Cu (Copper Peptide) third-party tested for purity?+−
Yes. Every batch of GHK-Cu (Copper Peptide) is tested by an independent third-party laboratory using HPLC and MS-UPLC, confirming purity and mass identity before the batch is released. Pure Peptides does not test its own material.
Can I see the Certificate of Analysis before buying?+−
Yes. The Certificate of Analysis for the batch currently in stock can be viewed and downloaded directly on this page, before you place an order. Each certificate states the batch number, the measured purity, and the date of analysis, and can be verified independently with the issuing laboratory using the report number it carries.
What does "Research Use Only" mean?+−
It means GHK-Cu (Copper Peptide) is supplied for in-vitro laboratory research and for no other purpose, and must not be administered to humans or animals. GHK-Cu is legal to purchase in the United States for in vitro and non-clinical laboratory research. It has no FDA approval and no approved human use. GHK-Cu is not a scheduled substance under the Controlled Substances Act. Sold strictly for qualified research use, not human or veterinary administration.
How is GHK-Cu (Copper Peptide) shipped and stored?+−
GHK-Cu (Copper Peptide) ships from US stock with cold-chain packaging and full tracking; orders placed before noon EST on business days are typically dispatched the same business day. On arrival, store the lyophilized powder at -20°C or below, dry and protected from light.
What is the difference between GHK and GHK-Cu?+−
GHK is the tripeptide on its own, glycine-histidine-lysine, weighing 340.38 g/mol. GHK-Cu is that tripeptide holding a copper ion, weighing 401.91 g/mol. This product is the copper complex. The two are not interchangeable in the published work: one study found the copper complex and copper ions alone both raised an enzyme in cultured skin cells while the tripeptide without copper did not, and another study of copper-free GHK concluded it behaved much like the copper form on a different measure.
Is GHK-Cu the same as PAL-GHK or Matrixyl?+−
No. Those are palmitoylated derivatives of the same tripeptide, sold separately. Adding a fatty acid chain changes the molecule, and research on one is not research on another. Each product page cites only work done on the compound it sells.
Compare GHK-Cu (Copper Peptide)
A side-by-side page that tells GHK-Cu (Copper Peptide) apart from another compound: how the two relate, which molecule the published evidence used, and whether they have been compared directly.
Regeneration Research
Related Compounds
From the blog
Background and context on this compound.
GHK-Cu Was Found in Human Blood in 1973. Skin Had Nothing to Do With It.The 1973 paper that introduced GHK had nothing to do with skin, or with copper. How a tripeptide from blood took fifteen years to become a matrix molecule.
GHK-Cu Is Blue for a Reason. Here's the Tell That Actually Proves It.A convincing blue color is easy to fake. Here's the plain-English version of the two checks that actually prove GHK-Cu's copper is real.
Reviewed for scientific accuracy
Dr. Martina Rossi, PhD
PhD, Université Grenoble Alpes · Scientific Contributor and Reviewer
Dr. Rossi's doctoral research at Université Grenoble Alpes examined the vascular functions of bone morphogenetic proteins. Her peer-reviewed work spans cell and molecular biology, vascular biology, and gene therapy, in journals including Cardiovascular Research, Scientific Reports, and Brain Sciences. She reviews Pure Peptides' product, reference, and research pages for scientific accuracy against the sources they cite.