GHK-Cu 1 vial — the vendor's own product photo

What we know so far

No independent test of Eternal Peptides' GHK-Cu yet

GHK-Cu generally tests around 99.7% purity across 19 independent certificates — but from other makers, so treat it as a benchmark, not proof of this seller's stock.
We couldn't place this listing's price — its size isn't readable or the market's too thin — so there's no cheap-fake check here.

How to verify this yourself

To verify before you buy: ask Eternal Peptides for the Janoshik COA for your batch number, then paste it into Verify — VialGrade confirms it's a real, unedited lab record.

Open the Verify tool

Testing unverifiedLive dataCopper peptide

Eternal Peptides ?Not rated yet

GHK-Cu 1 vial

Name: GHK-Cu 1 vial
Brand: Eternal Peptides
Price: 24.99 USD
Availability: InStock

A copper-binding tripeptide (glycyl-L-histidyl-L-lysine) complexed with copper(II) ions.

Observed price

$25$40

We can't read this listing's size (e.g. a multi-size or combo pack), so we can't compare its cost-per-mg against the market. The sticker price above is exact.

Price ↓ 38%No buyer reviews yet

Availability: In stock
Checked: 10 hours ago

Buy at Eternal Peptides

Hands you to eternalpeptides.com — VialGrade doesn’t sell or take payment

Some vendor links may earn VialGrade a commission. It never changes a grade, a price, or where a listing ranks.

Eternal Peptides

Unclaimed page

Lab tests

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Median purity

Listings

Real listing aggregated from the vendor's public page. Buying happens on their site, never on VialGrade — we take no payment and hold no stock. These are sold for laboratory research use only, not for human consumption; the seller sets their own terms and age limits at checkout.

What we know so far

No independent test of Eternal Peptides' GHK-Cu yet

GHK-Cu generally tests around 99.7% purity across 19 independent certificates — but from other makers, so treat it as a benchmark, not proof of this seller's stock.
We couldn't place this listing's price — its size isn't readable or the market's too thin — so there's no cheap-fake check here.

How to verify this yourself

To verify before you buy: ask Eternal Peptides for the Janoshik COA for your batch number, then paste it into Verify — VialGrade confirms it's a real, unedited lab record.

Open the Verify tool

Compare by real cost

Every GHK-Cu listing, cheapest per mg first

Sticker prices hide the size, so listings are ranked by what a milligram actually costs — with independently tested purity where it exists. All 54 are here: the last 12 are listings whose vendor never published a strength we can read, so they have no per-mg figure to sort on.

#	Vendor	Size	Price	Per mg	Tested purity	Real $/active mg
1	Umbrella Labs	400mg total	$80	$0.20/mg · too cheap?	—	$0.20/mgbest value	View
2	Umbrella LabsUnavailable	200mg total	$50	$0.25/mg · too cheap?	—	$0.25/mg	View
3	Ascend Bio LabsUnavailable	200mg total100mg / 2 Vials each	$99	$0.49/mg	99.8%	$0.50/mg	View
4	Chameleon PeptidesUnavailable	1g total100mg · 10-vial kit each	$520	$0.52/mg	99.9%	$0.52/mg	View
5	Ez Peptides	100mg total	$53	$0.53/mg	—	$0.53/mg	View
6	Simple Peptide	100mg total	$55	$0.55/mg	—	$0.55/mg	View
7	Chameleon PeptidesUnavailable	500mg total100mg · 5-vial pack each	$289	$0.58/mg	99.9%	$0.58/mg	View
8	Ascend Bio LabsUnavailable	100mg total	$58	$0.58/mg	99.8%	$0.58/mg	View
9	Bluum Peptides	100mg total	$59	$0.59/mg	—	$0.59/mg	View
10	Cernum BiosciencesUnavailable	100mg total	$60	$0.60/mg	—	$0.60/mg	View
11	Felix Chemical Supply	100mg total	$60	$0.60/mg	—	$0.60/mg	View
12	Chameleon PeptidesUnavailable	100mg total	$61	$0.61/mg	99.9%	$0.61/mg	View
13	Chameleon Peptides	500mg total50mg · 10-vial kit each	$308	$0.62/mg	99.9%	$0.62/mg	View
14	Modern Aminos	100mg total	$64	$0.64/mg	—	$0.64/mg	View
15	Modern AminosUnavailable	100mg total	$64	$0.64/mg	—	$0.64/mg	View
16	Ez Peptides	50mg total	$35	$0.70/mg	—	$0.70/mg	View
17	Ascend Bio LabsUnavailable	150mg total50mg / 3 Vials each	$110	$0.73/mg	99.8%	$0.73/mg	View
18	Chameleon Peptides	250mg total50mg · 5-vial pack each	$187	$0.75/mg	99.9%	$0.75/mg	View
19	Ascend Bio LabsUnavailable	100mg total50mg / 2 Vials each	$77	$0.77/mg	99.8%	$0.77/mg	View
20	Modern Aminos	50mg total	$42	$0.84/mg	—	$0.84/mg	View
21	Ascend Bio LabsUnavailable	50mg total	$43	$0.86/mg	99.8%	$0.86/mg	View
22	Umbrella Labs	100mg total100 Milligrams Vial each	$90	$0.90/mg	—	$0.90/mg	View
23	Bluum Peptides	50mg total	$45	$0.90/mg	—	$0.90/mg	View
24	Biotech Peptides	200mg total	$186	$0.93/mg	—	$0.93/mg	View
25	Umbrella Labs	120mg total2MG each	$118	$0.98/mg	—	$0.99/mg	View
26	Umbrella Labs	120mg total5MG each	$118	$0.98/mg	—	$0.99/mg	View
27	Core Peptides	200mg total	$197	$0.98/mg	—	$0.99/mg	View
28	Peptide Pros	50mg total	$50	$0.99/mg	—	$0.99/mg	View
29	Umbrella Labs	50mg total50 Milligrams Vial each	$50	$1.00/mg	—	$1.00/mg	View
30	Felix Chemical Supply	50mg total	$55	$1.10/mg	—	$1.10/mg	View
31	Core Peptides	50mg total	$58	$1.16/mg	—	$1.16/mg	View
32	Sports Technology Labs	50mg total	$60	$1.20/mg	100.0%	$1.20/mg	View
33	Biotech Peptides	50mg total	$64	$1.28/mg	—	$1.28/mg	View
34	Swiss Chems	50mg total	$69	$1.38/mg	—	$1.38/mg	View
35	Swiss Chems	500mg total50mg KIT (10 vials) each	$690	$1.38/mg	—	$1.38/mg	View
36	Ion PeptideUnavailable	50mg total	$99	$1.98/mg	—	$1.99/mg	View
37	Swiss Chems	100mg total10mg KIT (10 vials) each	$247	$2.47/mg	—	$2.48/mg	View
38	Umbrella Labs	10mg total10 Milligrams Vial each	$30	$3.00/mg	—	$3.01/mg	View
39	PurerawzUnavailable	10mg total	$47	$4.68/mg	—	$4.69/mg	View
40	Modern AminosUnavailable	2mg total	$109	$54.5/mg	—	$54.7/mg	View
41	Modern Aminos	2mg total	$109	$54.5/mg	—	$54.7/mg	View
42	PurerawzUnavailable	2mg total	$203	$101.5/mg	—	$101.8/mg	View
Listed, but not rankable — no published strength to price per mg
—	Ion PeptideUnavailable	1 vial	$13	no size published	—	—	View
—	Swiss Chems	1 vial	$25	no size published	—	—	View
—	Eternal Peptides	1 vial	$25	no size published	—	—	View
—	Modern Aminos	1 vial	$31	no size published	—	—	View
—	PurerawzUnavailable	1 vial	$39	no size published	—	—	View
—	Chameleon Peptides	1 vial	$40	no size published	99.9%	—	View
—	Cernum Biosciences	1 vial	$40	no size published	—	—	View
—	Ascension PeptidesUnavailable	100MG	$59	no size published	—	—	View
—	Nootropic Source	1 vial	$60	no size published	—	—	View
—	Simple PeptideUnavailable	1 vial	$65	no size published	—	—	View
—	Modern AminosUnavailable	1 vial	$68	no size published	—	—	View
—	Vici PeptidesUnavailable	100mg + 10mg	$159	no size published	—	—	View

Real $/active mg divides the price-per-mg by the measured purity — the honest cost of the actual peptide, so a 90%-pure vial isn’t compared as if it were 99%. Too cheap? flags a listing far below the market rate — often underdosing or a fake, not a deal. The crown marks the cheapest non-outlier; best value marks the lowest real cost per active mg. A vendor shown as Unavailable or Low stock is priced here but not currently buyable.

Understand this compound

What is GHK-Cu?

Widely studieda.k.a. Copper peptide, GHK-Copper, Copper tripeptide-1

A tiny copper-carrying molecule your body makes naturally, famous in skincare. It ferries copper to the enzymes that rebuild collagen and elastin, which is why it's studied for skin, hair, and wound repair.

Skin & cosmeticRecovery & healingLongevity & anti-aging

⚠

Good to know: Most positive human data come from small, often industry-sponsored topical cosmetic trials rather than large independent trials, and copper at high local concentrations can be pro-oxidant rather than protective.

How does GHK-Cu work?

The science

A naturally occurring copper-binding tripeptide (Gly-His-Lys) that delivers copper to enzymes regulating extracellular matrix remodeling, stimulating fibroblast production of collagen, elastin, and glycosaminoglycans.

Mechanism of action from published research — how the molecule behaves, not a claim about any product or any human-use effect.

What is GHK-Cu researched for?

Studied for skin rejuvenation, wound healing, and hair growth.

Skin & cosmeticStudied in cosmetic and skin research — collagen, elasticity, and appearance.
Recovery & healingStudied in tissue-repair research — tendon, ligament, muscle, and wound-healing models.
Longevity & anti-agingStudied in aging, cellular-senescence, and mitochondrial-function research.

How far has the research gone?

Widely studied — decades of preclinical work plus several small human skin trials showing increased collagen density versus vehicle or retinoic acid controls.

Where the science stands — an approved drug is not the same as the research-grade material a vendor sells, which is unregulated regardless.

What is GHK-Cu commonly stacked with?

Compounds the research community frequently discusses alongside GHK-Cu. Not a protocol or a recommendation — a map of what to read about next.

BPC-157 TB-500

What should I check before buying?

Independent purity. Look for a third-party COA (Janoshik or MZ) showing a measured purity — not just a number the vendor typed.
Batch match. The strongest evidence is a certificate for the exact batch you’ll receive, attributed to this vendor — check the cross-verification on the listing.
Vendor reputation. See how the vendor is talked about in the community before trusting a new name.

Research context only — VialGrade never gives dosing, medical, or human-use guidance.

The lab evidence

What we could verify

Each row is a separate question with its own answer — one green row never vouches for the rest.

Identity

Partial

The vendor advertises third-party testing; no independent record confirms it yet.

Measured purity

Unknown

No independent purity measurement on record.

Batch traceability

Unknown

No batch on this listing matches an independent record.

Sterility

Not tested

A purity certificate doesn't measure this — no such test on record.

Dose accuracy

Unknown

Not something VialGrade measures — no test on record.

These certificates are for GHK-Cu across every maker VialGrade tracks — not necessarily Eternal Peptides’s own stock. This listing’s specific evidence is the matrix above.

Independent testing

Independent lab tests on record for GHK-Cu

Real, publicly verifiable third-party tests. Purity is read from the certificate itself. A test reflects one lab’s result for one submitted batch — not a guarantee that every vial matches.

How does this data get here?

Every record below is a real certificate of analysis, gathered two ways: from the public verification feeds that independent labs (like Janoshik) publish, and from the certificates vendors post on their own product pages. We open each certificate document and read the measured purity, content, batch, and date directly off it — a scraper can’t read a number printed inside an image, so this is done by machine vision, then recorded here with a link back to the original.

Nothing here is typed in by a vendor or invented by us. Where a certificate is missing, we say so rather than filling the gap.

We re-check the lab feed, too. A “still listed” tag means the certificate is currently public in Janoshik’s database — we re-verify against the live feed and stamp the date. If a cert is later pulled, the tag flips. It’s a freshness check on the same source, not a second independent opinion.

What a certificate does & doesn’t prove

Three different questions. Purity (“how clean?”), identity (“is it the right molecule?”, a mass-spec test), and content (“did I get the labeled mg?”) are separate. A vial can be 99% pure and still be the wrong peptide, or the right peptide underdosed. We flag the measured dose against the label above; underdosing is the most common real fraud.

Who submitted the sample matters. Most of these are vendor-submitted — the seller chose which vial to send, so one good certificate doesn’t prove every batch is the same. The gold standard is a blind test, where a buyer sends a vial they bought as a normal customer. Same label doesn’t prove same product; same batch number doesn’t prove same batch.

100.0%

highest tested purity

Manufacturer	Batch	Purity	Content / dose	Lab
Sports Technology Labs	2026-04-13	99.97%	—	MZ Biolabs	View
Chameleon Peptides	B002A	99.92%	47.28 mg	Janoshik Analytical	View
PeptideGurus	10th June 2026	99.83%	96.11/100mg · full	Janoshik Analytical Still listed	Verify
Ascend Bio Labs	V260602-23-002	99.80%	—	Vanguard Laboratory	Verify
PeptideGurus	3rd June 2026	99.77%	50.6/50mg · full	Janoshik Analytical Still listed	Verify
GreyLabs.xyz	0582	99.73%	49.94 mg	Janoshik Analytical Still listed	Verify
https://crystalpeptides.eu/	CU1002026-02	99.68%	94.44 mg	Janoshik Analytical Still listed	Verify
http://www.sahepeptides.com/	—	99.67%	123.28/100mg ·	Janoshik Analytical Still listed	Verify
www.qhpeptides.com	4	99.60%	124.36/100mg ·	Janoshik Analytical Still listed	Verify
Shengtai Chemical Co., Ltd	2026	99.45%	44.74/50mg · underdosed	Janoshik Analytical Still listed	Verify
www.hkuppeptide.com	2026	99.44%	77.27/100mg · underdosed	Janoshik Analytical Still listed	Verify
www.taikangbio.com	2026	99.44%	77.27/100mg · underdosed	Janoshik Analytical Still listed	Verify
www.taishijie.com	2026	99.44%	77.27/100mg · underdosed	Janoshik Analytical Still listed	Verify
Unknown	—	99.42%	45.07/50mg · full	Janoshik Analytical Still listed	Verify
www.onlinepeptides.com	—	See report	—	Janoshik Analytical	Verify
WhatsApp: +852 9283 3016 WhatsApp: +852 6087 0903	—	See report	—	Janoshik Analytical	Verify
longevityprolabs.com	—	See report	—	Janoshik Analytical	Verify
www.meipeptide.comSterility	—	See report	—	Janoshik Analytical	Verify
UnknownHeavy metals	—	See report	—	Janoshik Analytical Still listed	Verify
Eternal Peptides	EP-260529-GH50	99.33%	—	Unverified lab · Kovera Labs	Verify

Claim not confirmed

testing advertised, but not independently confirmed

This listing advertises testing, yet no independent record in our index references Eternal Peptides for GHK-Cu. That doesn't prove the certificate is fake — but until it resolves at the lab, treat the testing claim as unbacked, not verified.

Vendor claim. Advertises testing.
Independent confirmation. No record found for Eternal Peptides. Verify the certificate at the lab before trusting it.
Compound-level evidence. We do hold 19 independent COAs for GHK-Cu (median 99.7%) — from other makers. Use it to judge this claim.

19 independent COAs on record for this compound · median 99.7% — see them all

Cross-checks the vendor’s testing claim against independent lab records. Read from the certificate, not re-measured by VialGrade. Purity is not a grade. Never a statement that a product is safe, sterile, or correctly dosed. What “grade” actually means

Price trend

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29 checks since Sep 4, 2026. Too short a span for a 30-day change. Latest $24.99 on Oct 2, 2026.

US legal status

Research-use-only — not FDA-approved

Sold “for research use only,” this compound is not FDA-approved for human use and has not been evaluated for safety, purity, or sterility in people. It is generally not a scheduled controlled substance, so buying it as a research chemical is typically not itself a drug crime — but marketing or using it as a drug is not lawful, and it is not a dietary supplement.

Read the full US law →

General information, not legal or medical advice. VialGrade sells nothing and encourages no human use.

Same compound

See the full GHK-Cu market — all 54 vendors, price history & lab tests