GHK-Cu lab tests

847 certificates of analysis for GHK-Cu are on file — 631 for single vials and 216 for blends and other forms — from 283 shops and 25 labs. The latest was tested on 6 Oct 2026.

These are certificates shops have chosen to publish, verified for authenticity before listing. Because shops decide which COAs to make public, the set reflects the batches they published rather than every production batch — a selection bias we state openly. What shop COAs show →

Tests on file

847

631 single vials · 216 blends & other forms

Median purity

99.76%

usual 99.28–99.95% · shop COAs

Measured vs label

104%

median · 30 under 90% · 56 over 120%

Latest test

6 Oct 2026

25 labs · 283 shops

Look up your vial's lot →GHK-Cu prices →GHK-Cu calculator Get a vial tested

What GHK-Cu results look like

single vials only · 630 purity results · 626 measured-content results

Purity is tightly bunched: the middle 80% of results sit within 0.7 points. Measured content spreads across 24 points of the label.

HPLC purity

99.28–99.95%middle 80% of results

median 99.76%97% at 99% or higher2 under 98%

% HPLC purity

Measured content vs label

95–119%middle 80% of results

median 104%30 under 90%56 over 120%

% of the labelled amount

outside the usual rangeEndotoxin reported on 123 of 631 (19%)Confirmed on the lab's own portal: 175 (28%)Most tested size: 50 mg (308), then 100 mg (255)

Latest GHK-Cu tests

10 most recent · all formsAll 847 ↓

Latest GHK-Cu lab tests
Tested	Shop	Lab	Purity	Measured vs label	Endotoxin	Record
6 Oct 2026	SF Bay Area Peptides	freedomdiagnosticstesting.com	99.81%	96.04 / 100 mg 96% of label	—	10569✓
1 Oct 2026	Peptide Hackers	Accumark Labs	99.94%	52.16 / 50 mg 104% of label	—	AM20260925-05✓
28 Sep 2026	ThePeptide	Testides	99.93%	68.67 / 50 mg 137% of label	—	ghk50-0626-02
26 Sep 2026	BatchTest Labs Peptides	Uzorak	99.92%	53.15 / 50 mg 106% of label	—	CU50-20260916-01✓
23 Sep 2026	Veratis Bio Peptides	freedomdiagnosticstesting.com	99.64%	56.86 / 50 mg 114% of label	Pass	GHK0001✓
22 Sep 2026	Humatide Peptides	ILS Laboratories	99.86%	103.67 / 100 mg 104% of label	Pass	H100GHKC100126✓
21 Sep 2026	DNA Peptides	SideChain Analytics	99.80%	55.42 / 50 mg 111% of label	—	DNA-GHK50-2609-01✓
19 Sep 2026	NorthStar Compounds	Axiom Analytics	99.86%	53.42 / 50 mg 107% of label	Pass	CU502602✓
14 Sep 2026	Direct Research Supply	Janoshik Labs	99.77%	54.98 / 50 mg 110% of label	—	View record →
9 Sep 2026	Vistara Labs	SideChain Analytics	99.80%	116.62 / 100 mg 117% of label	—	View record →

98% or higher95–98%90–95%under 90%✓ found on the lab's own portalHover an endotoxin chip for the lab's exact wording

Results by lab

single vials · labs with the most GHK-Cu tests

GHK-Cu single-vial results by testing lab
Lab	Tests	Median purity	Median measured vs label	Endotoxin reported	Confirmed on lab portal
freedomdiagnosticstesting.com	215	99.74%	103%	49	74
Janoshik Labs	142	99.80%	106%	0	27
Vanguard Laboratory	32	99.80%	102%	5	2
Kovera Labs	31	99.60%	108%	22	23
Chromate	30	99.96%	103%	9	2
ILS Laboratories	28	99.86%	105%	8	24
Horizon Analytical	26	99.48%	99%	0	0
Bioviridian	16	99.80%	102%	5	6

Differences reflect the vials each lab received and how it reports — this is not a ranking of labs. Every lab with a GHK-Cu test on file is linked under More on GHK-Cu.

What GHK-Cu testing has to rule out: the copper-free peptide

GHK-Cu is sold as a 1:1 copper complex of the tripeptide glycyl-L-histidyl-L-lysine, weighing about 403 Da. The copper-free tripeptide weighs 340.38 Da, costs less to make, and passes an HPLC purity test perfectly. HPLC separates by hydrophobicity and reports peak area, not metal, so a sample of pure copper-free GHK returns an excellent purity figure. On this compound a high purity number is compatible with receiving exactly the wrong molecule, and a certificate carrying a purity percentage with no mass result has not addressed the question that matters.

Mass spectrometry settles it. The two candidates differ by roughly 62.5 Da, about 18% of the molecule: 340.38 for the free tripeptide against about 403 for the 1:1 copper complex. That gap is trivially visible on a mass spectrum and invisible to HPLC. A batch-matched spectrum reading near 403 Da is the copper complex; 340.38 is the copper-free peptide carrying the GHK-Cu name. The substitution risk is per batch, not per vendor. Elemental analysis would measure the copper directly at 1:1 stoichiometry, but Peptigrity has not seen it offered by any vendor or laboratory serving this market.

The purity records on this page cannot answer the copper question either: as of May 2026, none of the 736 independent HPLC tests then on file measured copper. The naming confusion starts in the reference databases, which hold three chemical records rather than two:

GHK free tripeptide (Gly-His-Lys): PubChem CID 73587, C₁₄H₂₄N₆O₄, MW 340.38, CAS 49557-75-7.
Cu-GHK (neutral adduct record): PubChem CID 378611, C₁₄H₂₄CuN₆O₄, MW 403.92, no CAS.
Prezatide copper (monocation): PubChem CID 71587328, C₁₄H₂₃CuN₆O₄⁺, MW 402.92, CAS 89030-95-5. Copper-to-peptide stoichiometry is 1:1 across all copper records.
PubChem's copper-free record (CID 73587) carries the synonyms "GHK-Cu", "Copper Peptide", "Copper(II)ghk", "Copper glycyl-histidyl-lysine", "Prezatide" and "Tripeptide-1" — six names for a copper complex attached to a molecule containing no copper. Treat any of them on a listing as ambiguous rather than confirmatory; a listing built from database synonyms can mislabel without intending to.
A label or spec sheet printing 340.38 under a GHK-Cu heading has described the wrong molecule on its own packaging: 49557-75-7 is free GHK, 89030-95-5 is prezatide copper.
Wikipedia's chembox for the copper complex gives C₁₄H₂₂CuN₆O₄ with CAS 89030-95-5, a formula matching none of the three PubChem records (PubChem's record for that CAS is the monocation C₁₄H₂₃CuN₆O₄⁺), and lists a different CID for free GHK than PubChem's own. A spec sheet reproducing those figures should be rejected.
Peptigrity's GHK-Cu compound page flags that "some vendors sell free GHK labeled as GHK-Cu (mislabeling) or use suboptimal copper-to-peptide ratios." Mass spectrometry alone will not fully characterise a suboptimal ratio; that takes elemental analysis.
Endotoxin (LAL) matters more here than on most compounds, because FDA's published concern about injectable GHK-Cu is specifically immunogenicity from aggregation and peptide-related impurities.

All GHK-Cu tests

851 records · 4 supplier-provided, listed and left out of the benchmarks · page 1 of 3 · newest first · blends tagged

Records 1–300 of 851 · 4 supplier-provided, listed and left out of the benchmarks, most recent first.
Tested	Shop	Lab	Purity	Measured vs label	Endotoxin	Record
6 Oct 2026	SF Bay Area Peptides	freedomdiagnosticstesting.com	99.81%	96.04 / 100 mg 96% of label	—	10569✓
1 Oct 2026	Peptide Hackers	Accumark Labs	99.94%	52.16 / 50 mg 104% of label	—	AM20260925-05✓
28 Sep 2026	ThePeptide	Testides	99.93%	68.67 / 50 mg 137% of label	—	ghk50-0626-02
26 Sep 2026	BatchTest Labs Peptides	Uzorak	99.92%	53.15 / 50 mg 106% of label	—	CU50-20260916-01✓
23 Sep 2026	Veratis Bio Peptides	freedomdiagnosticstesting.com	99.64%	56.86 / 50 mg 114% of label	Pass	GHK0001✓
22 Sep 2026	Humatide Peptides	ILS Laboratories	99.86%	103.67 / 100 mg 104% of label	Pass	H100GHKC100126✓
21 Sep 2026	DNA Peptides	SideChain Analytics	99.80%	55.42 / 50 mg 111% of label	—	DNA-GHK50-2609-01✓
19 Sep 2026	NorthStar Compounds	Axiom Analytics	99.86%	53.42 / 50 mg 107% of label	Pass	CU502602✓
14 Sep 2026	Direct Research Supply	Janoshik Labs	99.77%	54.98 / 50 mg 110% of label	—	View record →
9 Sep 2026	Vistara Labs	SideChain Analytics	99.80%	116.62 / 100 mg 117% of label	—	View record →
8 Sep 2026	Purely Peptides	Bioviridian	99.68%	103.58 / 100 mg 104% of label	—	GHK-20260828-01✓
7 Sep 2026	PeptuviaSupplier-provided	Janoshik Labs	99.23%	52.2 / 50 mg 104% of label	—	PSGHKCU50-1✓
4 Sep 2026	10 Bottle Value	Krause Analytical	99.90%	99.6 / 100 mg 100% of label	—	99g2knq
3 Sep 2026	PSL Labs	Janoshik Labs	99.73%	53.21 / 50 mg 106% of label	—	PSL-GHKCU-50MG✓
29 Aug 2026	ANKR Lab	freedomdiagnosticstesting.com	99.67%	58.15 / 50 mg 116% of label	—	9001✓
25 Aug 2026	Peptuvia	freedomdiagnosticstesting.com	99.86%	59.3 / 50 mg 119% of label	—	View record →
24 Aug 2026	NovaForge Labs	freedomdiagnosticstesting.com	99.88%	108.87 / 100 mg 109% of label	—	NFL-0002✓
22 Aug 2026	SZ Biolabs	BTLabs	99.70%	102.1 / 100 mg 102% of label	—	PC-260808-55
22 Aug 2026	Peptide Plugs	freedomdiagnosticstesting.com	99.83%	116.79 / 100 mg 117% of label	Pass	20810IC-DK✓
19 Aug 2026	NovaForge Labs	freedomdiagnosticstesting.com	99.95%	96.79 / 100 mg 97% of label	—	NFL-0001✓
19 Aug 2026	Coastal Peptides	Kovera Labs	99.58%	101.91 / 100 mg 102% of label	—	GHK100-0826A✓
12 Aug 2026	High Tide Compounds	Kovera Labs	99.28%	109.44 / 100 mg 109% of label	Pass	GHK100-004✓
12 Aug 2026	High Tide Compounds	Kovera Labs	99.36%	51.79 / 50 mg 104% of label	Pass	GHK50-003✓
7 Aug 2026	Monkey Peps	Janoshik Labs	99.51%	104.36 / 100 mg 104% of label	—	GHK-MP01✓
6 Aug 2026	Peptuvia	Janoshik Labs	99.56%	105.79 / 100 mg 106% of label	—	TRCU20260710✓
5 Aug 2026	Zhuoyue Peptide	Janoshik Labs	99.56%	105.79 / 100 mg 106% of label	—	CUZY20260710
4 Aug 2026	Biotech Compounds	Bioviridian	99.82%	102.83 / 100 mg 103% of label	—	202609-1-CU✓
3 Aug 2026	BioEdge Research Labs	Kovera Labs	99.50%	101.42 / 100 mg 101% of label	Pass	062026GHK100✓
31 Jul 2026	Wolverine Peptides	freedomdiagnosticstesting.com	99.51%	100.13 / 100 mg 100% of label	—	View record →
31 Jul 2026	Phase One Labz	freedomdiagnosticstesting.com	99.56%	13.03 / 1 mg 1303% of labelCheck label	—	P1-GHR-06✓
31 Jul 2026	Ramp Peptides	freedomdiagnosticstesting.com	99.61%	102.95 / 100 mg 103% of label	—	CU50-RP02R✓
31 Jul 2026	Ramp Peptides	freedomdiagnosticstesting.com	99.61%	53.08 / 50 mg 106% of label	—	CU50-RP02B✓
31 Jul 2026	Ramp Peptides	freedomdiagnosticstesting.com	99.29%	55.15 / 50 mg 110% of label	—	CU50-RP03S✓
30 Jul 2026	Pepspan	Janoshik Labs	99.82%	45.48 / 50 mg 91% of label	—	PEP-GHKCU-2607-01✓
28 Jul 2026	UKMAXX	Janoshik Labs	99.80%	46.68 / 50 mg 93% of label	—	GHK-2026-05-A✓
28 Jul 2026	PeptuviaSupplier-provided	Janoshik Labs	99.41%	92.2 / 100 mg 92% of label	—	2026079100✓
28 Jul 2026	PeptuviaSupplier-provided	Janoshik Labs	99.47%	48.01 / 50 mg 96% of label	—	202607950✓
24 Jul 2026	PADRE Research	ILS Laboratories	99.87%	52.81 / 50 mg 106% of label	—	PR-GHK50-B1-0626-1✓
22 Jul 2026	Orvella Labs	Kovera Labs	99.54%	55.09 / 50 mg 110% of label	Pass	GHK-34N97✓
22 Jul 2026	Phase One Labz	ILS Laboratories	99.02%	105.38 / 100 mg 105% of label	—	P1-100GHK06✓
21 Jul 2026	Nova Labs	freedomdiagnosticstesting.com	99.54%	47.27 / 50 mg 95% of label	—	View record →
21 Jul 2026	Aurora Peptides	Kovera Labs	99.69%	53.03 / 50 mg 106% of label	Pass	GHK50-072026-001✓
21 Jul 2026	Aurora Peptides	Kovera Labs	99.72%	105.41 / 100 mg 105% of label	Pass	GHK100-072026-001✓
21 Jul 2026	Peptime	freedomdiagnosticstesting.com	99.94%	109.67 / 100 mg 110% of label	—	64GHK✓
18 Jul 2026	Sterling Peptides	ILS Laboratories	99.67%	106.71 / 100 mg 107% of label	Pass	FO453✓
17 Jul 2026	PepGenics Research	freedomdiagnosticstesting.com	99.71%	49.82 / 50 mg 100% of label	—	GK50060826Q✓
16 Jul 2026	Peptide Plugs	freedomdiagnosticstesting.com	99.84%	97.18 / 100 mg 97% of label	Pass	160-670X DL✓
16 Jul 2026	Phase One Labz	ILS Laboratories	99.46%	51.14 / 50 mg 102% of label	—	P1-5GHK06✓
15 Jul 2026	Luv Aminos	freedomdiagnosticstesting.com	99.71%	45.09 / 50 mg 90% of label	—	GHK-50-001✓
15 Jul 2026	Core Peptides	Vanguard Laboratory	99.80%	200 / 200 mg 100% of label	—	C74131
15 Jul 2026	Umbrella Labs	freedomdiagnosticstesting.com	99.44%	100.35 / 100 mg 100% of label	—	ULP-21504C✓
15 Jul 2026	Umbrella Labs	freedomdiagnosticstesting.com	99.43%	9.52 / 10 mg 95% of label	—	ULP-21504B✓
15 Jul 2026	Umbrella Labs	freedomdiagnosticstesting.com	99.31%	4.26 / 5 mg 85% of label	—	ULP-21504A✓
15 Jul 2026	AMC Essentials	Kovera Labs	99.77%	99.3 / 100 mg 99% of label	Pass	AMC-GHK-100-02✓
13 Jul 2026	Glow Aminos	ILS Laboratories	99.91%	52.05 / 50 mg 104% of label	—	GL-010206✓
13 Jul 2026	Pure Amino	ILS Laboratories	99.89%	106.24 / 100 mg 106% of label	Reported	PA25050102✓
13 Jul 2026	Pure Amino	ILS Laboratories	99.86%	51.75 / 50 mg 103% of label	Reported	PA25020101✓
13 Jul 2026	Double R Labs	Kovera Labs	99.71%	1000 / 1000 mg 100% of label	Pass	DRL-07-GHK-RAW✓
12 Jul 2026	PeptideRUO	freedomdiagnosticstesting.com	99.80%	117.36 / 100 mg 117% of label	—	CUX00706✓
11 Jul 2026	Zen Aminos	freedomdiagnosticstesting.com	99.56%	124.18 / 100 mg 124% of label	—	ZAP-GK1003✓
10 Jul 2026	PurgoLabs Peptides	freedomdiagnosticstesting.com	99.82%	49.54 / 50 mg 99% of label	—	PL-GHKS-04✓
9 Jul 2026	Apexx Biolabs	freedomdiagnosticstesting.com	99.72%	114.96 / 100 mg 115% of label	—	Red Cap-1✓
9 Jul 2026	Ascend Science	Kovera Labs	99.58%	112.82 / 100 mg 113% of label	—	C1042464245u✓
8 Jul 2026	NuVion Health	Janoshik Labs	99.71%	41.4 / 100 mg 41% of labelCheck label	—	View record →
8 Jul 2026	Maple Research Labs	Testides	99.56%	53.18 / 50 mg 106% of label	—	5816✓
8 Jul 2026	Pureline Biolabs	Janoshik Labs	99.70%	52.64 / 50 mg 105% of label	—	plb-013✓
7 Jul 2026	American Peptides	Bioviridian	99.80%	101.17 / 100 mg 101% of label	Pass	GHK100-0616
7 Jul 2026	American Peptides	Bioviridian	99.90%	50.67 / 50 mg 101% of label	Pass	GHK500-0616
5 Jul 2026	Studz Peptides	ILS Laboratories	99.95%	103.27 / 100 mg 103% of label	—	GHK10609LIS✓
5 Jul 2026	Studz Peptides	ILS Laboratories	99.98%	51.92 / 50 mg 104% of label	—	GHK50609LIS✓
4 Jul 2026	Alpine Aminos	Kovera Labs	99.45%	107.91 / 100 mg 108% of label	Pass	AA-GHKCU100-062926✓
3 Jul 2026	Backroad Aminos	—	99.68%	108.61 / 100 mg 109% of label	Pass	BA062726GHK100✓
3 Jul 2026	NuLife Peptides	freedomdiagnosticstesting.com	99.38%	46.96 / 50 mg 94% of label	Pass	NLGHK50501✓
3 Jul 2026	Ascension Peptides	Kovera Labs	99.23%	103.83 / 100 mg 104% of label	Pass	16-05260628✓
1 Jul 2026	PeptuviaSupplier-provided	Janoshik Labs	99.34%	81.96 / 100 mg 82% of label	—	2026069100✓
1 Jul 2026	Hydro Research Peptides	Kovera Labs	99.56%	991.16 / 1000 mg 99% of label	—	GHKRAW-20260618-001✓
1 Jul 2026	Humatide Peptides	ILS Laboratories	99.98%	103.6 / 100 mg 104% of label	—	H100GHKC060126
30 Jun 2026	Snap Peptides	Kovera Labs	99.48%	52.38 / 50 mg 105% of label	Pass	SP26-GHKCU50-03✓
29 Jun 2026	Sunrise Bioresearch	ILS Laboratories	99.63%	52.55 / 50 mg 105% of label	—	GHK50JUN26-01✓
29 Jun 2026	Glow Aminos	ILS Laboratories	99.72%	1004.15 / 1000 mg 100% of label	—	GL-010172✓
29 Jun 2026	Vertex LabsBlendGHK-Cu/KPV/BPC-157/TB-500	BTLabs	99.70%	94 / 80 mg 118% of label	—	KL0000080
27 Jun 2026	My Amino Lab	Kovera Labs	99.87%	56.42 / 50 mg 113% of label	—	V2606-GH50-2401✓
27 Jun 2026	Revitalized Research	Horizon Analytical	99.56%	50.5 / 50 mg 101% of label	—	RRL-6055127-P
27 Jun 2026	Revitalized Research	Horizon Analytical	99.58%	49.2 / 50 mg 98% of label	—	RRL-4944656-P
27 Jun 2026	Revitalized Research	Horizon Analytical	99.48%	99.5 / 100 mg 100% of label	—	RRL-6524116-P
26 Jun 2026	High Tide Compounds	Kovera Labs	99.66%	106.33 / 100 mg 106% of label	Pass	GHK100-003✓
23 Jun 2026	Ktechpeptide	Janoshik Labs	99.91%	104.91 / 100 mg 105% of label	—	2026-6✓
23 Jun 2026	Ktechpeptide	Janoshik Labs	99.91%	53.85 / 50 mg 108% of label	—	2026-6✓
23 Jun 2026	GenPeptide	freedomdiagnosticstesting.com	99.90%	53.22 / 50 mg 106% of label	—	GPGHK50061726✓
23 Jun 2026	Blue Sky Peptide	MZ Biolabs	99.96%	not reported	—	3SWGH0126
22 Jun 2026	Ascend Peptides AU	Ozcanium Analytics	99.85%	50.95 / 50 mg 102% of label	—	16/06/2026
22 Jun 2026	Veratis Bio Peptides	freedomdiagnosticstesting.com	99.85%	54.25 / 50 mg 109% of label	Pass	GHK260618A✓
22 Jun 2026	Blank Peptides	freedomdiagnosticstesting.com	99.92%	112.29 / 100 mg 112% of label	Pass	GHK100-062026-1✓
21 Jun 2026	Pep Club USA	freedomdiagnosticstesting.com	99.82%	50.8 / 50 mg 102% of label	—	View record →
21 Jun 2026	Oneday Compounds	ILS Laboratories	99.96%	103.85 / 100 mg 104% of label	—	OC-GHK100-101✓
20 Jun 2026	High Tide Compounds	Kovera Labs	99.54%	57.58 / 50 mg 115% of label	Pass	GHK50-002✓
20 Jun 2026	Double R Labs	Kovera Labs	99.74%	107.01 / 100 mg 107% of label	Pass	DRL-06-GHKCU100✓
19 Jun 2026	Glow Aminos	ILS Laboratories	99.80%	105.71 / 100 mg 106% of label	—	GL-010139✓
17 Jun 2026	PurgoLabs Peptides	freedomdiagnosticstesting.com	99.33%	47.81 / 50 mg 96% of label	—	PL-GHKS-03✓
15 Jun 2026	Rogue Compounds	Vanguard Laboratory	99.80%	48.89 / 50 mg 98% of label	—	1300
15 Jun 2026	Oasis Labs	Bioviridian	99.90%	100.44 / 100 mg 100% of label	—	112455✓
15 Jun 2026	Oasis Labs	Bioviridian	99.90%	50.35 / 50 mg 101% of label	—	112455✓
14 Jun 2026	Nura Peptide	freedomdiagnosticstesting.com	99.73%	105.87 / 100 mg 106% of label	Pass	GHK100-062026-1✓
14 Jun 2026	Nova BioLabs PeptidesBlendGHK-Cu/TB-500/BPC-157/KPV	Uzorak	99.75%	95.53 / 80 mg 119% of label	—	View record →
14 Jun 2026	Nova BioLabs PeptidesBlendGHK-Cu/TB-500/BPC-157	Uzorak	99.84%	72.4 / 70 mg 103% of label	—	NVGL70-01052026
13 Jun 2026	National Science Labs	freedomdiagnosticstesting.com	99.69%	not reported	—	V4707523452
12 Jun 2026	Excalibur PeptidesBlendGHK-Cu/KPV/BPC-157/Thymosin Beta-4	freedomdiagnosticstesting.com	99.86%	100.76 / 80 mg 126% of label	—	View record →
12 Jun 2026	Bluum PeptidesBlendGHK-Cu/BPC-157/Thymosin Beta-4	freedomdiagnosticstesting.com	99.60%	73.05 / 70 mg 104% of label	Pass	GLO702606-86A
11 Jun 2026	Puratek Peptides	ILS Laboratories	99.72%	104.42 / 100 mg 104% of label	—	GHK100004✓
11 Jun 2026	Kalyx Labs	freedomdiagnosticstesting.com	99.60%	46.81 / 50 mg 94% of label	—	CU50-B04✓
11 Jun 2026	Imperial Peptides UK	Janoshik Labs	99.63%	58.29 / 50 mg 117% of label	—	GHK50-05/28✓
10 Jun 2026	Uther	Uzorak	99.73%	65.08 / 50 mg 130% of label	—	View record →
10 Jun 2026	Uther	Uzorak	99.68%	126.81 / 100 mg 127% of label	—	HK100-0523✓
10 Jun 2026	EZ Peptides	Janoshik Labs	99.81%	95.11 / 100 mg 95% of label	—	EZP-GHK10005272026-06✓
9 Jun 2026	Glow Aminos	ILS Laboratories	99.91%	52.38 / 50 mg 105% of label	—	GL-010140✓
8 Jun 2026	GenPeptide	freedomdiagnosticstesting.com	99.73%	105.11 / 100 mg 105% of label	—	GPGHK100053126✓
8 Jun 2026	Protide Health	freedomdiagnosticstesting.com	99.69%	56.35 / 50 mg 113% of label	Pass	PH-CU50-1228
7 Jun 2026	EZ Peps	ILS Laboratories	99.57%	105.32 / 100 mg 105% of label	—	26-U5-PBT / HK10005017✓
7 Jun 2026	Everest PeptidesBlendGHK-Cu/KPV/BPC-157/Thymosin Beta-4	freedomdiagnosticstesting.com	99.82%	97.75 / 80 mg 122% of label	—	EVR KLOW80 2606 002
5 Jun 2026	Aurora Aminos	freedomdiagnosticstesting.com	99.65%	48.86 / 50 mg 98% of label	Pass	CU50-2606✓
4 Jun 2026	Optimum Formula	ILS Laboratories	99.89%	51.94 / 50 mg 104% of label	Pass	#HXP6B✓
4 Jun 2026	Life Peptide	Janoshik Labs	99.91%	24 / 20 mg 120% of label	—	260311
4 Jun 2026	Bluum Peptides	freedomdiagnosticstesting.com	99.39%	110.82 / 100 mg 111% of label	Pass	GHK1002605-80L
3 Jun 2026	PeptidePro Canada	Janoshik Labs	99.84%	105.85 / 100 mg 106% of label	—	2511-1-234
2 Jun 2026	Uther	Uzorak	99.87%	122.46 / 100 mg 122% of label	—	HK100-0517✓
2 Jun 2026	Uther	Uzorak	99.63%	57.41 / 50 mg 115% of label	—	HK50-0517✓
2 Jun 2026	Backroad Aminos	Kovera Labs	99.22%	105.69 / 100 mg 106% of label	Pass	BA060126GHK100✓
2 Jun 2026	Zen Aminos	freedomdiagnosticstesting.com	99.81%	45.25 / 50 mg 91% of label	—	ZAP-GHCU50
2 Jun 2026	Zen Aminos	freedomdiagnosticstesting.com	99.82%	19.78 / 20 mg 99% of label	—	ZAP-GHCU20
1 Jun 2026	Warrior Makers	Testides	99.98%	112.33 / 100 mg 112% of label	Pass	11237-SG5
1 Jun 2026	Puratek Peptides	ILS Laboratories	99.89%	53.67 / 50 mg 107% of label	—	GHK50002✓
1 Jun 2026	Precisely PeptidesBlendGHK-Cu/BPC-157/TB-500/KPV	Vanguard Laboratory	99.50%	86.43 / 80 mg 108% of label	—	PP412-26-001
1 Jun 2026	Panda Peptides	Janoshik Labs	99.79%	54.14 / 50 mg 108% of label	—	PP2602-012AB
1 Jun 2026	Chameleon PeptidesClosed	Janoshik Labs	99.79%	54.14 / 50 mg 108% of label	—	B002B
1 Jun 2026	Chameleon PeptidesClosed	Janoshik Labs	99.92%	47.28 / 50 mg 95% of label	—	B002A
30 May 2026	Modern Research Peptides	freedomdiagnosticstesting.com	99.90%	109.18 / 100 mg 109% of label	—	mRjptcd28✓
30 May 2026	Petratide ScienceBlendGHK-Cu/KPV Blend	freedomdiagnosticstesting.com	99.68%	77.51 / 60 mg 129% of label	Pass	PS05-CUKV60
29 May 2026	Peptide Maxxing	freedomdiagnosticstesting.com	99.84%	45.28 / 50 mg 91% of label	—	GHK673✓
29 May 2026	Alyve Peptides	freedomdiagnosticstesting.com	99.84%	45.28 / 50 mg 91% of label	—	GHK673✓
29 May 2026	EVO Labs Research	Kovera Labs	99.60%	53.82 / 50 mg 108% of label	—	EVO5213026
28 May 2026	Nova BioLabs Peptides	Uzorak	99.85%	48.74 / 50 mg 97% of label	—	UG8-6SQ✓
28 May 2026	Adria Science	liquilabs	99.80%	126.1 / 100 mg 126% of label	—	2025241
28 May 2026	Adria Science	liquilabs	99.80%	59.8 / 50 mg 120% of label	—	2025240
28 May 2026	Rhome Research	freedomdiagnosticstesting.com	99.31%	42.76 / 50 mg 86% of label	Pass	GHK01
27 May 2026	Alpine Aminos	Kovera Labs	99.60%	54.43 / 50 mg 109% of label	Pass	AA-GHKCU50-0526✓
27 May 2026	Good Science	Vanguard Laboratory	99.80%	100.63 / 100 mg 101% of label	Pass	3548171
27 May 2026	Good Science	Vanguard Laboratory	99.80%	50.19 / 50 mg 100% of label	—	3548165
27 May 2026	Good ScienceBlendGHK-Cu/BPC-157/TB-500	Vanguard Laboratory	99.50%	73.79 / 70 mg 105% of label	Pass	3548477
27 May 2026	Good ScienceBlendGHK-Cu/BPC-157/TB-500/KPV	Vanguard Laboratory	99.50%	81.05 / 80 mg 101% of label	Pass	3548597
27 May 2026	Simply Peptides	Janoshik Labs	99.77%	46.8 / 50 mg 94% of label	—	1125091
26 May 2026	Crystal Peptides	Janoshik Labs	99.68%	94.44 / 100 mg 94% of label	—	CU1002026-02✓
26 May 2026	Midshire Labs (formerly Regen Peptides)	Janoshik Labs	99.71%	55.81 / 50 mg 112% of label	—	HK50-0505
25 May 2026	Curo	BTLabs	99.60%	56.5 / 50 mg 113% of label	—	GHK50SR526
21 May 2026	Signum Scientific	Horizon Analytical	99.48%	99.5 / 100 mg 100% of label	—	SS-6524116-P
21 May 2026	Amino Forge	Horizon Analytical	99.61%	51.5 / 50 mg 103% of label	—	A(ITUBALL-5556366-P
20 May 2026	Imperial Peptides UK	Janoshik Labs	99.56%	38.92 / 50 mg 78% of labelCheck label	—	GHK50-03/28✓
20 May 2026	Global Aminos	freedomdiagnosticstesting.com	99.69%	99.97 / 100 mg 100% of label	—	View record →
19 May 2026	S1 Research	ILS Laboratories	99.67%	1027.92 / 1000 mg 103% of label	—	GH051026S1✓
19 May 2026	Zen Aminos	freedomdiagnosticstesting.com	99.84%	102.27 / 100 mg 102% of label	—	ZAP-GX302
19 May 2026	Purity PeptidesBlendGHK-Cu/BPC-157/TB-500	MDx BioAnalytical Laboratory	99.75%	99.75 / 90 mg 111% of label	Pass	View record →
19 May 2026	Purity Peptides	MDx BioAnalytical Laboratory	99.74%	52.03 / 50 mg 104% of label	Pass	View record →
19 May 2026	Proforma Peptides	Analiza Białek	99.00%	51.33 / 50 mg 103% of label	—	2069
18 May 2026	Janera Science	Vanguard Laboratory	99.80%	48.97 / 50 mg 98% of label	—	GHKCU-50-0426-01
18 May 2026	PurgoLabs Peptides	freedomdiagnosticstesting.com	99.89%	52.56 / 50 mg 105% of label	—	PL-GHKS-01✓
18 May 2026	TruLab PeptidesBlendGHK-Cu/KPV/BPC-157/Thymosin Beta-4	freedomdiagnosticstesting.com	99.88%	83.02 / 80 mg 104% of label	—	Poly2605180183
18 May 2026	Excalibur Peptides	BTLabs	99.60%	52.6 / 50 mg 105% of label	—	85MND23
18 May 2026	Kimera Chems	Vanguard Laboratory	99.80%	48.74 / 50 mg 97% of label	Pass	KC-GHK-CLR1
15 May 2026	EZ Peptides	Janoshik Labs	99.66%	50.75 / 50 mg 101% of label	—	EZP-GHK5005072026-14✓
15 May 2026	Ameano Peptides	Janoshik Labs	99.70%	50.05 / 50 mg 100% of label	—	GHK5005072026-14✓
15 May 2026	Zen AminosBlendGHK-Cu/KPV/BPC-157/Thymosin Beta-4	freedomdiagnosticstesting.com	99.42%	9.29 / 75 mg 12% of labelCheck label	—	View record →
15 May 2026	Purity Peptides	MDx BioAnalytical Laboratory	99.75%	92.71 / 80 mg 116% of label	Pass	View record →
14 May 2026	Drakon Peptides	Janoshik Labs	99.36%	74.63 / 50 mg 149% of label	—	DRK-GHK-MAY26✓
14 May 2026	Peptide Partners	TrustPointe Analytics	99.74%	98.74 / 100 mg 99% of label	—	View record →
14 May 2026	Glow Aminos	ILS Laboratories	99.65%	106 / 100 mg 106% of label	—	GL-010108✓
14 May 2026	Valor PeptidesBlendGLOW	Accumark Labs	98.94%	77.66 / 70 mg 111% of label	—	ARC-GL70-002
13 May 2026	Peptide Partners	TrustPointe Analytics	99.67%	98.84 / 100 mg 99% of label	—	View record →
13 May 2026	Precisely PeptidesBlendGHK-Cu/BPC-157/TB-500	Vanguard Laboratory	99.50%	72.9 / 70 mg 104% of label	—	PP412-26-001
13 May 2026	Reta One LabsBlendGHK-Cu/BPC-157/TB-500/KPV	Kovera Labs	99.91%	89.11 / 80 mg 111% of label	Pass	KL800526
12 May 2026	Sunrise Bioresearch	ILS Laboratories	99.10%	105.36 / 100 mg 105% of label	—	GHK100MAY26-01✓
12 May 2026	True Research Labs	Horizon Analytical	99.58%	97.5 / 100 mg 98% of label	—	TRL-9372216
12 May 2026	True Research Labs	Horizon Analytical	99.54%	51.25 / 50 mg 102% of label	—	TRL-9377026
12 May 2026	LA Peptides	Bioviridian	99.90%	103.67 / 100 mg 104% of label	Pass	1218
12 May 2026	Oath PeptidesBlendGHK-Cu/KPV/BPC-157/Thymosin Beta-4	freedomdiagnosticstesting.com	99.71%	160.37 / 80 mg 200% of labelCheck label	Pass	A1236
12 May 2026	Oath PeptidesBlendGHK-Cu/BPC-157/Thymosin Beta-4	freedomdiagnosticstesting.com	99.75%	101.18 / 70 mg 145% of label	—	A1236
11 May 2026	Warrior Makers	MZ Biolabs	99.97%	not reported	—	11237-SG5
11 May 2026	24Peptides	liquilabs	99.70%	102.5 / 100 mg 102% of label	Pass	GF-GHK100-B242
11 May 2026	24Peptides	liquilabs	99.80%	50.7 / 50 mg 101% of label	Pass	GF-GHK50-B242
11 May 2026	Peptify UK	Janoshik Labs	99.48%	44.39 / 50 mg 89% of label	—	2026/04
11 May 2026	Glacier Aminos	ILS Laboratories	98.89%	1000 / 1000 mg 100% of label	—	GHRAWGA-01
9 May 2026	Ascend Science	freedomdiagnosticstesting.com	99.84%	101.04 / 100 mg 101% of label	Pass	View record →
8 May 2026	Voltera Sciences Peptides	ILS Laboratories	99.71%	53.04 / 50 mg 106% of label	—	GU50-06152026✓
8 May 2026	Synthesis PeptidesBlendGHK-Cu/KPV/BPC-157/Thymosin Beta-4	freedomdiagnosticstesting.com	99.68%	81.84 / 80 mg 102% of label	—	View record →
8 May 2026	Synthesis PeptidesBlendGHK-Cu/BPC-157/Thymosin Beta-4	freedomdiagnosticstesting.com	99.57%	72.38 / 70 mg 103% of label	—	View record →
8 May 2026	Synthesis Peptides	freedomdiagnosticstesting.com	99.90%	56.23 / 50 mg 112% of label	—	View record →
6 May 2026	River City Aminos	Vanguard Laboratory	99.80%	105.62 / 100 mg 106% of label	—	RCA-GHK100-4.26-1001
6 May 2026	RC Peptides	Janoshik Labs	99.00%	77.11 / 100 mg 77% of labelCheck label	—	011
5 May 2026	Wolverine PeptidesBlendGHK-Cu/BPC-157/TB-500	Chromate	99.66%	74.57 / 70 mg 107% of label	—	View record →
4 May 2026	Profound Aminos	TrustPointe Analytics	99.75%	99.35 / 100 mg 99% of label	—	SP-3686
4 May 2026	Profound Aminos	TrustPointe Analytics	99.66%	112.71 / 100 mg 113% of label	—	SP-3685
3 May 2026	Protide HealthBlendGHK-Cu/KPV/BPC-157/Thymosin Beta-4	freedomdiagnosticstesting.com	99.83%	94.97 / 80 mg 119% of label	Pass	PH-KD80-0309
3 May 2026	Protide HealthBlendGHK-Cu/BPC-157/Thymosin Beta-4	freedomdiagnosticstesting.com	99.79%	77.6 / 70 mg 111% of label	Pass	PH-GW70-0316
3 May 2026	Protide Health	freedomdiagnosticstesting.com	99.88%	51.16 / 50 mg 102% of label	Pass	PH-GHK50-0228
3 May 2026	Bluum PeptidesBlendGHK-Cu/BPC-157/Thymosin Beta-4	freedomdiagnosticstesting.com	99.83%	54 / 70 mg 77% of labelCheck label	—	GLO702604-76A
2 May 2026	Gentleman PeptidesBlendKLOW	Bioviridian	99.90%	94.81 / 80 mg 119% of label	—	View record →
1 May 2026	Alpha PeptidesBlendGHK-Cu/BPC-157/TB-500/KPV	Analytical Formulations Inc	99.80%	90.39 / 80 mg 113% of label	—	KL-42326428
30 Apr 2026	Restore Peptides	Janoshik Labs	99.16%	56.6 / 50 mg 113% of label	—	View record →
30 Apr 2026	Bluum PeptidesBlendGHK-Cu/KPV/BPC-157/Thymosin Beta-4	freedomdiagnosticstesting.com	99.91%	90.9 / 80 mg 114% of label	—	KLO802604-75A
29 Apr 2026	Optimum Aminos	freedomdiagnosticstesting.com	99.95%	97.31 / 100 mg 97% of label	—	GHK1-26A✓
29 Apr 2026	Instant Peptides	Kovera Labs	99.93%	54.25 / 50 mg 109% of label	—	2026-0255-A
29 Apr 2026	Instant Peptides	Kovera Labs	99.87%	107.88 / 100 mg 108% of label	—	2026-0254-A
28 Apr 2026	Pure Tested Peptides	Krause Analytical	99.90%	76.6 / 100 mg 77% of labelCheck label	—	vquh2mc✓
28 Apr 2026	Core Peptides	Vanguard Laboratory	99.79%	50 / 50 mg 100% of label	—	C74201✓
28 Apr 2026	Growth Guys	Janoshik Labs	99.00%	71.91 / 75 mg 96% of label	—	GHK09
27 Apr 2026	NovaCell Peptides	liquilabs	99.80%	54.7 / 50 mg 109% of label	Pass	Cu-022602
27 Apr 2026	Oath PeptidesBlendGHK-Cu/TB-500/BPC-157	freedomdiagnosticstesting.com	99.89%	89.54 / 50 mg 179% of labelCheck label	Pass	B1326012
27 Apr 2026	Nova Peptide SupplyBlendGHK-Cu/KPV/BPC-157/Thymosin Beta-4	freedomdiagnosticstesting.com	99.85%	50.38 / 80 mg 63% of labelCheck label	Pass	NV-P-3AL4
27 Apr 2026	BioLongevity Labs	MDx BioAnalytical Laboratory	99.71%	51.23 / 50 mg 102% of label	Pass	11-3-46136
26 Apr 2026	Zen AminosBlendGHK-Cu/BPC-157/Thymosin Beta-4	freedomdiagnosticstesting.com	99.50%	8.91 / 70 mg 13% of labelCheck label	—	ZAGW03
26 Apr 2026	Midwest PeptideBlendGHK-Cu/BPC-157/Thymosin Beta-4	freedomdiagnosticstesting.com	99.57%	78 / 78 mg 100% of label	—	MPGW002
26 Apr 2026	Felix Chemical Supply	freedomdiagnosticstesting.com	99.81%	59.25 / 50 mg 119% of label	Pass	042326-GHS-C
24 Apr 2026	Regenerative Research Peptides	Krause Analytical	99.40%	84.4 / 100 mg 84% of label	Pass	GK26-02
23 Apr 2026	PeptideTech	freedomdiagnosticstesting.com	99.72%	53.55 / 50 mg 107% of label	—	GHK50-5545✓
23 Apr 2026	Honest Peptide	freedomdiagnosticstesting.com	99.93%	96.6 / 100 mg 97% of label	—	CU10004182026✓
23 Apr 2026	Xeno Peptides	BTLabs	99.40%	55.2 / 50 mg 110% of label	—	CU50-01
23 Apr 2026	Xeno PeptidesBlendGHK-Cu/BPC-157/TB-500	BTLabs	99.50%	73.8 / 70 mg 105% of label	—	GL70-01
23 Apr 2026	Petratide Science	freedomdiagnosticstesting.com	99.91%	96.14 / 100 mg 96% of label	—	PS04-CU100
23 Apr 2026	Petratide Science	freedomdiagnosticstesting.com	99.92%	48.78 / 50 mg 98% of label	—	PS04-GHK02-B
23 Apr 2026	Precisely Peptides	Vanguard Laboratory	99.80%	49.65 / 50 mg 99% of label	—	PP412-26-001
22 Apr 2026	TriVial BioWorks	Kovera Labs	99.76%	52.18 / 50 mg 104% of label	Pass	Gk50-0413✓
22 Apr 2026	PepGenics Research	freedomdiagnosticstesting.com	99.35%	56.53 / 50 mg 113% of label	—	PGR-GKS0041026✓
22 Apr 2026	Elutide	Horizon Analytical	99.51%	99.5 / 100 mg 100% of label	—	E-9250030-P
22 Apr 2026	Oath Peptides	freedomdiagnosticstesting.com	99.21%	53.08 / 50 mg 106% of label	Pass	A1136
22 Apr 2026	RUO.bioBlendGHK-Cu/BPC-157/TB-500	Chromate	99.78%	75.42 / 70 mg 108% of label	Pass	GLO002
22 Apr 2026	Disguised AlphaBlendGHK-Cu/KPV/BPC-157/TB-500	Chromate	99.84%	91.43 / 80 mg 114% of label	Pass	FEB29
22 Apr 2026	Arcane PeptidesBlendGHK-Cu/BPC-157/TB-500	Chromate	99.78%	75.42 / 70 mg 108% of label	Pass	GLO002
22 Apr 2026	Peptide Plugs	freedomdiagnosticstesting.com	99.87%	109.81 / 100 mg 110% of label	—	121-A-D
22 Apr 2026	Crush Research	ILS Laboratories	99.91%	104.91 / 100 mg 105% of label	Pass	CRGHK-100-2604-1
22 Apr 2026	Crush ResearchBlendGHK-Cu/BPC-157/TB-4/KPV	ILS Laboratories	99.47%	83.55 / 80 mg 104% of label	Pass	CRKLO-80-2604-1
21 Apr 2026	S1 Research	freedomdiagnosticstesting.com	99.79%	116.44 / 100 mg 116% of label	Pass	GHK04172651✓
21 Apr 2026	Saiyan Med	Janoshik Labs	99.70%	83.47 / 100 mg 83% of label	—	SYM-CU-B2604✓
21 Apr 2026	Rescue Research USA PeptidesBlendGHK-Cu/BPC-157/Thymosin Beta-4	freedomdiagnosticstesting.com	99.77%	65.31 / 70 mg 93% of label	—	View record →
21 Apr 2026	NG Peptide	ILS Laboratories	99.89%	52.44 / 50 mg 105% of label	Pass	GHK-12
21 Apr 2026	Coffee and Peppers	freedomdiagnosticstesting.com	99.83%	114.83 / 100 mg 115% of label	Pass	CPGHK1026041502
21 Apr 2026	Coffee and Peppers	freedomdiagnosticstesting.com	99.56%	208.36 / 200 mg 104% of label	Pass	CPGHK20026041601
21 Apr 2026	Coffee and PeppersBlendGHK-Cu/BPC-157/Thymosin Beta-4	freedomdiagnosticstesting.com	99.89%	79.05 / 70 mg 113% of label	Pass	CPGLOW26041503
21 Apr 2026	Coffee and PeppersBlendGHK-Cu/KPV/BPC-157/Thymosin Beta-4	freedomdiagnosticstesting.com	99.94%	87.33 / 80 mg 109% of label	Pass	CPKLOW20041502
20 Apr 2026	Modified Aminos	Vanguard Laboratory	99.80%	48.38 / 50 mg 97% of label	—	MA-GHP-501
20 Apr 2026	Luxara Labs	Janoshik Labs	99.70%	46.17 / 50 mg 92% of label	—	G33718
19 Apr 2026	BulkGLPBlendGHK-Cu/KPV/BPC-157/Thymosin Beta-4	freedomdiagnosticstesting.com	99.80%	76.83 / 80 mg 96% of label	Pass	03210
19 Apr 2026	Coffee and PeppersBlendGHK-Cu/KPV/BPC-157/Thymosin Beta-4	freedomdiagnosticstesting.com	99.43%	90.18 / 80 mg 113% of label	—	CPKLOW20041603
19 Apr 2026	Felix Chemical Supply	freedomdiagnosticstesting.com	99.82%	97.52 / 100 mg 98% of label	Pass	041626-GHK-6
17 Apr 2026	Aigil Research	freedomdiagnosticstesting.com	99.71%	49.65 / 50 mg 99% of label	—	AG-CU50✓
17 Apr 2026	Glow Aminos	ILS Laboratories	99.86%	104.85 / 100 mg 105% of label	Pass	GL-010096✓
17 Apr 2026	Verified Peptides	Janoshik Labs	99.73%	95.41 / 95 mg 100% of label	—	GHK052614100N
17 Apr 2026	Felix Chemical Supply	freedomdiagnosticstesting.com	99.97%	48.47 / 50 mg 97% of label	Pass	041326-GHS-1
16 Apr 2026	PeptideTech	freedomdiagnosticstesting.com	99.51%	109.71 / 100 mg 110% of label	—	GHK100-4145✓
15 Apr 2026	Vertex LabsBlendGHK-Cu/BPC-157/TB-500	BTLabs	98.80%	67 / 70 mg 96% of label	—	GW0000015
15 Apr 2026	Reta One LabsBlendGHK-Cu/BPC-157/TB-500	Kovera Labs	99.76%	73.87 / 70 mg 106% of label	Pass	Glow700326
15 Apr 2026	Reta One Labs	Kovera Labs	99.86%	108.35 / 100 mg 108% of label	Pass	GK1000426
14 Apr 2026	Vertex Labs	BTLabs	99.70%	68.1 / 100 mg 68% of labelCheck label	—	GH0000023
14 Apr 2026	Valor Peptides	Accumark Labs	98.87%	57.57 / 50 mg 115% of label	—	ARC-GHK50-002
14 Apr 2026	PeptidologyBlendGLOW	Vanguard Laboratory	99.50%	74.43 / 70 mg 106% of label	—	1673
13 Apr 2026	BioEdge Research Labs	Kovera Labs	99.95%	107.76 / 100 mg 108% of label	Pass	03302026GHK100✓
13 Apr 2026	LA Peptides	Bioviridian	99.90%	102.73 / 100 mg 103% of label	Pass	BATCH 1018
13 Apr 2026	24Peptides	liquilabs	99.80%	109.2 / 100 mg 109% of label	Pass	GF-GHKCU100-B241
13 Apr 2026	24Peptides	liquilabs	99.80%	57.6 / 50 mg 115% of label	Pass	GF-GHKCU50-B241
13 Apr 2026	Elite Research USA	BioRegen	99.42%	57.33 / 50 mg 115% of label	—	5456SY0326
13 Apr 2026	Regenerative Research Peptides	Krause Analytical	99.40%	84.4 / 100 mg 84% of label	Pass	GK26-02
12 Apr 2026	Stemcode Peptides	freedomdiagnosticstesting.com	99.06%	1.99 / 2 mg 100% of label	—	GHT7200(MC-2601
12 Apr 2026	Pure Health Peptides	Ethos Analytics	99.00%	52.72 / 50 mg 105% of label	—	TUY-030926
12 Apr 2026	Pure Health Peptides	Ethos Analytics	99.00%	105.29 / 100 mg 105% of label	—	TUY-030926
12 Apr 2026	Go Alpha Labs	freedomdiagnosticstesting.com	99.97%	53.48 / 50 mg 107% of label	—	LO07-10
12 Apr 2026	Go Alpha Labs	freedomdiagnosticstesting.com	99.59%	100.8 / 100 mg 101% of label	—	LO07-10
12 Apr 2026	Thrive Peptides	freedomdiagnosticstesting.com	99.59%	107.43 / 100 mg 107% of label	—	TP-03-GHK
11 Apr 2026	PeptideRUO	freedomdiagnosticstesting.com	99.77%	101.49 / 100 mg 101% of label	—	CUX00401✓
11 Apr 2026	Red Dirt (RDR) Peptides	freedomdiagnosticstesting.com	99.87%	90.6 / 100 mg 91% of label	Pass	CU1002604✓
10 Apr 2026	DS Research Peptides	freedomdiagnosticstesting.com	99.68%	116.34 / 100 mg 116% of label	Pass	48933
10 Apr 2026	Peppy&Me	Krause Analytical	99.90%	99.7 / 100 mg 100% of label	—	PMCU1002603A
10 Apr 2026	Peppy&Me	Krause Analytical	99.60%	50.2 / 50 mg 100% of label	—	PMCU502603A
10 Apr 2026	Elutide	Horizon Analytical	99.83%	98.75 / 100 mg 99% of label	—	E-7751103-P
10 Apr 2026	BetterBio Synthesis	Janoshik Labs	99.89%	104.96 / 105 mg 100% of label	—	10025
10 Apr 2026	Evolve BiopepBlendGHK-Cu/BPC-157/TB-500/KPV	Ethos Analytics	98.00%	72.33 / 70 mg 103% of label	Pass	EK-260406-KW
9 Apr 2026	Nura Peptide	freedomdiagnosticstesting.com	99.91%	101.45 / 100 mg 101% of label	—	GHK100-04926✓
9 Apr 2026	Rescue Research USA Peptides	freedomdiagnosticstesting.com	99.94%	113.48 / 100 mg 113% of label	—	View record →
9 Apr 2026	Rescue Research USA Peptides	freedomdiagnosticstesting.com	99.94%	62.24 / 50 mg 124% of label	—	View record →
9 Apr 2026	Rescue Research USA PeptidesBlendGHK-Cu/KPV/TB-500/BPC-157	freedomdiagnosticstesting.com	99.96%	91.19 / 80 mg 114% of label	—	View record →
9 Apr 2026	Protide Health	freedomdiagnosticstesting.com	99.70%	107.97 / 100 mg 108% of label	Pass	PH-GHK100-0219
9 Apr 2026	Peak Peptides Rancho Cucamonga	Analytical Formulations Inc	99.60%	127.1 / 100 mg 127% of label	—	GHKC-100-0426
9 Apr 2026	Valor PeptidesBlendGLOW	Accumark Labs	99.25%	72.58 / 70 mg 104% of label	—	GW0002
9 Apr 2026	Evolve BiopepBlendKLOW	Ethos Analytics	98.00%	72.33 / 60 mg 121% of label	Pass	EK-260406-KW
8 Apr 2026	Oasis Labs	Bioviridian	99.70%	101.25 / 100 mg 101% of label	—	262702✓
8 Apr 2026	OmegaminoBlendGHK-Cu/BPC-157/Thymosin Beta-4	freedomdiagnosticstesting.com	99.77%	76.83 / 70 mg 110% of label	—	1001
7 Apr 2026	Oneday Compounds	Vanguard Laboratory	99.80%	47.72 / 50 mg 95% of label	—	OC-GHK50-102
7 Apr 2026	Rescue Research USA PeptidesBlendGHK-Cu/KPV/BPC-157/Thymosin Beta-4	freedomdiagnosticstesting.com	99.89%	94.25 / 80 mg 118% of label	—	View record →
7 Apr 2026	Vera	freedomdiagnosticstesting.com	99.92%	53.14 / 50 mg 106% of label	—	GK50-260324A
7 Apr 2026	Blank PeptidesBlendGHK-Cu/KPV/BPC-157/Thymosin Beta-4	freedomdiagnosticstesting.com	99.79%	87.91 / 90 mg 98% of label	—	665394
7 Apr 2026	Blank PeptidesBlendGHK-Cu/BPC-157/Thymosin Beta-4	freedomdiagnosticstesting.com	99.73%	73.18 / 70 mg 105% of label	—	665394
7 Apr 2026	Blank Peptides	freedomdiagnosticstesting.com	99.82%	98.51 / 100 mg 99% of label	—	665394
5 Apr 2026	Rivn PeptidesBlendGHK-Cu/KPV/BPC-157/Thymosin Beta-4	freedomdiagnosticstesting.com	99.86%	86.26 / 80 mg 108% of label	—	4299
5 Apr 2026	Rivn PeptidesBlendGHK-Cu/BPC-157/Thymosin Beta-4	freedomdiagnosticstesting.com	99.84%	62.82 / 70 mg 90% of label	—	3321

Measured amount in amber when it is under 90% or over 130% of the label; Check label when it is under 80% or over 150%. Records without a lot number link as View →. Blend and other-form rows keep their place and page; they are tagged and left out of the figures above, because a blend certificate reports one purity and one amount for the whole vial. Blends with their own page: KLOW lab tests (108) · GLOW lab tests (92)

Seven checks for any GHK-Cu certificate

The same seven questions decide whether a certificate of analysis means anything, whichever compound it describes. Six are about the document; the seventh is about what no document can tell you.

An independent, batch-matched COA. The certificate must name the batch or lot in your hands, and must come from a laboratory the vendor neither owns nor pays. A specimen certificate from an earlier lot proves nothing about the vial you were sent.
HPLC purity, read against a known band. A purity figure is only informative against the distribution for that compound. "Above 98%" is not a claim — the useful question is whether the result sits inside the range the rest of the market reports. How to read HPLC and mass-spec results.
Mass-spectrometry identity. HPLC says how much of the sample is one thing; it does not say which thing. Only a mass-spec result establishes identity, and it is the only check that separates compounds a few daltons apart. Contamination is not hypothetical: research-grade custom peptides from two independent commercial suppliers were found to carry contaminating peptides at roughly 1% by weight, enough to produce false-positive results in immunology assays (Clinical and Vaccine Immunology, 2008 — a study of HIV vaccine peptide libraries rather than of any compound on this site).
Net content, measured rather than assumed. Purity and quantity are different questions: a vial can be 99.7% pure and still contain two thirds of the labelled mass. Why 10 mg isn't 10 mg.
Endotoxin (LAL) on the batch. An absent endotoxin line means the batch was not tested — not that it passed. Endotoxin testing and LAL interpretation.
Who ran the test, and what they left off. A laboratory with a record on this compound, named on the certificate, with a verification route back to it. Testing laboratories we track · Red flags in a certificate of analysis.
What no test on the vial can establish. A perfect certificate confirms that a vendor sold the correct molecule at the stated quantity. It says nothing about efficacy, dosing, or long-term safety.

Want a vial tested yourself? How to send a peptide for independent HPLC testing.