Which vendors sell GHK-Cu with independent COA testing?

60 vendors in the Merit Verified directory have independent COA evidence on file for GHK-Cu — 359 COAs total. COA coverage and test dates are listed on the GHK-Cu page at https://meritverified.org/peptides/ghk-cu.

How do I verify the quality of GHK-Cu from a vendor?

To verify GHK-Cu quality, look for an independent certificate of analysis (COA) from a third-party lab — not a lab the vendor owns or pays directly. The COA should state the tested compound, lot number, purity percentage (identity and concentration), and the lab's name. Cross-reference the lot number against the vendor's current stock. Merit Verified indexes COAs for GHK-Cu at https://meritverified.org/peptides/ghk-cu so you can compare evidence across vendors before buying.

What is the regulatory status of GHK-Cu?

GHK-Cu is tracked in the Merit Verified registry. Regulatory status for research peptides in the US has been evolving — the FDA has reclassified a number of peptides out of the 503A compounding ingredient list since 2025. Merit Verified does not provide legal or regulatory advice; check official FDA sources or consult a licensed professional for the current status of GHK-Cu in your jurisdiction.

Healing & Recovery

GHK-Cu

Also known as: Glycyl-L-histidyl-L-lysine Copper

GHK-Cu is the copper(II) complex of a human tripeptide found in plasma. It is a well-established topical cosmetic ingredient for photoaged skin and is NOT an FDA-approved drug.

Where to buy · live market data

Who's worth your money for GHK-Cu

Every current seller, ranked by independent evidence — Merit Score, latest COA purity, and live $/mg (size-normalized). Prices refresh daily. Rankings are never paid.

Top Merit pick

🇺🇸 Glacier Aminos 99

Highest Merit Score (99) of 20 scored sellers

$0.31/mg

$30.99 · 100mg · 99.9% purity

7 COAs

Buy code MERIT · 10% off

Best value after code

🇺🇸 Hydro Research Peptides 97

$0.00/mg effective with 15% code

$0.00/mg

$0.45 · 100mg · 99.6% purity

5 COAs

Buy code MERIT · 15% off

Most tested

🇺🇸 Sunrise Bioresearch 88

13 independent COAs on file

$0.05/mg

$23.72 · 500mg · 99.6% purity

13 COAs

Buy

Average price

$1.36/mg

range $0.00–$55.00/mg

Sellers

from $0.45

45-day trend

+19%

vs 45-day avg $/mg

73 of 95 sellers have a current price· 44 stale hidden· 9 unverified hidden

	Vendor	Price	$/mg	vs avg	Purity	COAs	Merit
🇺🇸	Glacier Aminos ✓ verified at source · just now	$30.99· 100mg	$0.31/mg	-77.2%	99.9%	7	99	Buy code MERIT · 10% off
🇺🇸	Hydro Research Peptides ✓ verified at source · just now	$0.45· 100mg	$0.00/mg	-99.7%	99.6%	5	97	Buy code MERIT · 15% off
🇺🇸	Reta One Labs ✓ verified at source · just now	$29.00· 50mg	$0.58/mg	-57.4%	99.9%	8	95	Buy affiliate
🇺🇸	Prime Peptides ✓ verified at source · just now	$60.00· 100mg	$0.60/mg	-55.9%	99.5%	3	95	Buy
🇺🇸	Licensed Peptides ✓ verified at source · just now	$61.99· 100mg	$0.62/mg	-54.4%	99.8%	5	95	Buy code MERIT · 5% off
	Nova Peptides ✓ verified at source · just now	$39.99· 100mg	$0.40/mg	-70.6%	99.8%	3	94	Buy
🇺🇸	Forge Performance Co. ✓ verified at source · just now	$50.00· 100mg	$0.50/mg	-63.2%	99.8%	2	94	Buy code MERIT · 10% off
🇺🇸	Ignite Peptides ✓ verified at source · just now	$60.00· 100mg	$0.60/mg	-55.9%	99.8%	2	93	Buy code MERIT · 10% off
🇺🇸	Polaris Peptides ✓ verified at source · just now	$35.00· 50mg	$0.70/mg	-48.5%	—	—	90	Buy
🇺🇸	Peptide Plugs ✓ verified at source · just now	$40.00· 100mg	$0.40/mg	-70.6%	99.8%	2	89	Buy

Top Merit pick

🇺🇸 Glacier Aminos
✓ verified at source · just now
99

$0.31/mg -77.2% vs avg

$30.99

100mg

99.9% purity 7 COAs

Buy code MERIT · 10% off
🇺🇸 Hydro Research Peptides
✓ verified at source · just now
97

$0.00/mg -99.7% vs avg

$0.45

100mg

99.6% purity 5 COAs

Buy code MERIT · 15% off
🇺🇸 Reta One Labs
✓ verified at source · just now
95

$0.58/mg -57.4% vs avg

$29.00

50mg

99.9% purity 8 COAs

Buy affiliate
🇺🇸 Prime Peptides
✓ verified at source · just now
95

$0.60/mg -55.9% vs avg

$60.00

100mg

99.5% purity 3 COAs

Buy
🇺🇸 Licensed Peptides
✓ verified at source · just now
95

$0.62/mg -54.4% vs avg

$61.99

100mg

99.8% purity 5 COAs

Buy code MERIT · 5% off
Nova Peptides
✓ verified at source · just now
94

$0.40/mg -70.6% vs avg

$39.99

100mg

99.8% purity 3 COAs

Buy
🇺🇸 Forge Performance Co.
✓ verified at source · just now
94

$0.50/mg -63.2% vs avg

$50.00

100mg

99.8% purity 2 COAs

Buy code MERIT · 10% off
🇺🇸 Ignite Peptides
✓ verified at source · just now
93

$0.60/mg -55.9% vs avg

$60.00

100mg

99.8% purity 2 COAs

Buy code MERIT · 10% off
🇺🇸 Polaris Peptides
✓ verified at source · just now
90

$0.70/mg -48.5% vs avg

$35.00

50mg

no purity

Buy
🇺🇸 Peptide Plugs
✓ verified at source · just now
89

$0.40/mg -70.6% vs avg

$40.00

100mg

99.8% purity 2 COAs

Buy

Prices observed from public storefronts (last 24h), normalized to $/mg. "Evidence" is Merit's 0–100 Merit Score, derived only from observable verification evidence (methodology on /about); "Purity" is the latest independent COA. Some buy links are affiliate links — Merit may earn a commission at no extra cost to you, and where a vendor offers one, the code shown gets you a discount at their checkout. Affiliate status never affects price data, ranking, or the Merit Score (full policy on /disclosure). Research use only.

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Compound reference

About GHK-Cu

CAS

89030-95-5

Molecular formula

C14H22CuN6O4

Sequence

GHK

Typical dose range

1–2 mg/day subcutaneous (research use)

Half-life

~30 minutes (plasma); tissue-bound activity reported 24–72 hours

Independent evidence

COAs for GHK-Cu

359 third-party tests across 60 vendors. Each card links to the full report.

All 359 COAs for GHK-Cu →

Measured purity over time

GHK-Cu

Who's worth your money for GHK-Cu

Watch GHK-Cu

About GHK-Cu

COAs for GHK-Cu

15 citations indexed for GHK-Cu

Two-Part Study of the Effects of the X39 Patch on Circulating GHK and GHK-Cu Levels in Healthy Adults

The Regenerative Potential of GHK-Cu in Aesthetic Medicine

Augmented Skin Beneficial Effects of Thermus Thermophilus and Bacillus Subtilis Mixed-Culture Ferment Extract by Tripeptide GHK-Cu

The Laccase-like Property of GHK-Cu and Its Applications in Colorimetric Sensing of Phenolic Compounds

Middle-aged mice treated with GHK-Cu peptide administered intraperitoneally or intranasally show behavioral rescue but divergent hippocampal aging programs

The GHK-Cu delays aging in Caenorhabditis elegans via coordinated regulation of mitochondrial function and activation of DAF-16/SKN-1 pathways