Why is my reconstituted GHK-Cu solution blue-violet?

The blue-violet color is the characteristic appearance of the copper(II) coordination complex and is expected. A colorless solution would suggest the copper complex has dissociated.

How does standalone GHK-Cu differ from GHK-Cu in the GLOW or KLOW Blend?

The 50 mg GHK-Cu component is identical across all three. The blends add BPC-157, TB-500, and (KLOW) KPV for multi-pathway studies. The standalone vial is preferred for single-compound dose-response or baseline characterization.

Why does GHK-Cu require light protection?

Light — especially UV — can catalyze oxidation of the Cu(II) center and disrupt the chelate complex, altering the compound's identity. Amber vials or foil wrapping during refrigerated storage protects the coordination chemistry.

What purity is appropriate for GHK-Cu research?

≥99% HPLC purity with LC-MS confirmation of the 403.9 Da molecular weight, verifying both the peptide sequence and copper complexation. TX Research Peptides supplies GHK-Cu at this standard with a batch-specific COA.

Is GHK-Cu naturally occurring in the human body?

Yes — it is endogenous to human plasma, urine, and saliva. Plasma concentrations decline with age from ~200 ng/mL in young adults to under 80 ng/mL in older adults.

GHK-Cu (Copper Peptide) research peptide vial

≥99% Purity

Regenerative & Repair

GHK-Cu (Copper Peptide)

Name: GHK-Cu (Copper Peptide)
Brand: TX Research Peptides
SKU: ghk-cu
Availability: InStock

≥99% PurityChecking Stock

Copper tripeptide complex studied for collagen synthesis and gene expression research.

$35

Strength

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Any mix of products counts — the discount applies to your whole cart at checkout. (Supplies like bacteriostatic water don't count.)

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Flat rate $12 US shipping

≥99% purity guaranteed

HPLC + MS verified

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About this compound

GHK-Cu (glycyl-L-histidyl-L-lysine copper(II)) is a naturally occurring tripeptide-copper complex first isolated from human plasma in 1973. The Gly-His-Lys sequence has an extraordinarily high affinity for copper(II) ions, forming a stable chelate complex that is central to its biological research relevance. GHK-Cu is one of the most studied tripeptides in dermal biology, regenerative research, and aging pathway investigation, with documented effects on collagen type I and III synthesis, glycosaminoglycan production, broad gene expression modulation (30+ genes in cell-array studies), SOD-mimetic antioxidant activity, and angiogenesis pathway signaling via VEGF in animal wound models. Supplied as a 50 mg high-dose vial for cell-culture dose-response and multi-condition research protocols. For in-vitro laboratory research use only.

Storage & Handling

Store lyophilized powder at −20°C for long-term stability; short-term 2–8°C is acceptable. Reconstitute with bacteriostatic water; keep refrigerated at 2–8°C after reconstitution and use within typical research timelines.

For laboratory and research use only. Not for human or veterinary use, diagnostic, or therapeutic applications. Statements have not been evaluated by the FDA.

Research Disclaimer: The information below is provided for laboratory and research-use-only educational purposes. It is not medical advice. GHK-Cu (Copper Peptide) is not intended for human or veterinary use, diagnosis, or therapy, and statements have not been evaluated by the FDA.

Compound Overview

What is GHK-Cu (Copper Peptide)?

GHK-Cu (Copper Peptide) is a research peptide supplied by TX Research Peptides for laboratory investigation. It is provided as a lyophilized powder, manufactured to a minimum purity of 99% as confirmed by reverse-phase HPLC and electrospray-ionization mass spectrometry. GHK-Cu (Copper Peptide) is studied in vitro and in animal models in the regenerative & repair research category.

Research Applications

GHK-Cu (Copper Peptide) in research models

Independent investigators have studied GHK-Cu (Copper Peptide) in cell-culture and rodent models to characterize its biochemical activity. All references to research applications describe published in-vitro or animal studies — GHK-Cu (Copper Peptide) is not approved for human or veterinary use and TX Research Peptides makes no health, therapeutic, or efficacy claims. See the Citations section for primary literature where available.

Mechanism of Action

Receptor & pathway interactions studied

Published research describes GHK-Cu (Copper Peptide) interacting with receptor systems and signaling pathways relevant to its compound class. Specific receptor binding, downstream second-messenger activity, and dose-response profiles are documented in peer-reviewed laboratory studies; researchers should consult primary literature when designing experiments.

Purity & Testing

HPLC + mass-spec verification

Every batch of GHK-Cu (Copper Peptide) is analyzed by reverse-phase HPLC for purity (≥99% by area) and by electrospray-ionization mass spectrometry for molecular-weight identity confirmation. Lot-specific Certificates of Analysis are provided for the strength you order and are linked above as well as on the product page gallery.

Storage & Reconstitution

Handling lyophilized peptides

Store the lyophilized GHK-Cu (Copper Peptide) powder at −20°C for long-term stability; short-term storage at 2–8°C is acceptable. Reconstitute with bacteriostatic water immediately prior to use; once reconstituted, keep refrigerated at 2–8°C and use within typical research timelines. This guidance is concentration / reconstitution information only and is not human dosing advice.

Researchers typically reconstitute with bacteriostatic water. Browse research supplies →

Frequently Asked

GHK-Cu (Copper Peptide) research FAQ

What purity is GHK-Cu (Copper Peptide) tested to?+

Every batch of GHK-Cu (Copper Peptide) is tested by HPLC for purity (≥99% by area) and confirmed by mass spectrometry. The lot-specific Certificate of Analysis is available on this product page.

Is GHK-Cu (Copper Peptide) intended for human use?+

No. GHK-Cu (Copper Peptide) is supplied strictly for laboratory and research-use-only investigation. It is not intended for human or veterinary use, diagnosis, or therapy.

How should GHK-Cu (Copper Peptide) be stored?+

Store the lyophilized powder at −20°C for long-term stability. After reconstitution with bacteriostatic water, store at 2–8°C and use within typical research timelines.

Do you ship within the United States?+

Yes. TX Research Peptides ships GHK-Cu (Copper Peptide) domestically within the US with flat-rate shipping. Orders ship from the US for fast delivery to research labs.

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Related Compounds

GHK-Cu (Copper Peptide)

About this compound

What is GHK-Cu (Copper Peptide)?

GHK-Cu (Copper Peptide) in research models

Receptor & pathway interactions studied

HPLC + mass-spec verification

Handling lyophilized peptides

GHK-Cu (Copper Peptide) research FAQ

What researchers say about GHK-Cu (Copper Peptide)

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