Finnrick - Ensuring a Safer and More Transparent Supply Chain

GHK-Cu

We've tested 325 samples of GHK-Cu sourced from 44 vendors between 22 Apr 2025 and 4 Mar 2026. Purity varies from 91.46% to 100.00%, and quantity can diverge by up to +/-505% vs advertised value.

Finnrick Top 3™ - 6 Mar 2026
GHK-Cu
1
Shanghai Sigma Audley SSA
A
GREAT
2
Peptidology
A
GREAT
3
Peptide Sciences
B
GOOD

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Vendors

Tests
Vendor
Rating
CountAvgMinMaxOldestMost Recent
Pharma Grade PeptidesPharma Grade Peptides
A
Great
210.010.010.06 May 20256 May 2025
Orbitrex PeptidesOrbitrex Peptides
A
Great
29.19.09.225 Oct 202527 Oct 2025
Bulk Peptide WholesaleBulk Peptide Wholesale
A
Great
39.28.310.06 Dec 202511 Feb 2026
Heman Peptide HMHeman Peptide HM
A
Great
48.47.810.023 Oct 202529 Dec 2025
Atomik LabzAtomik Labz
A
Great
48.77.69.86 May 202520 May 2025
Nuscience PeptidesNuscience Peptides
A
Great
27.27.27.26 May 20256 May 2025
Accelerate LabsAccelerate Labs
A
Great
27.27.27.210 Jul 202510 Jul 2025
Precision Peptide CoPrecision Peptide Co
A
Great
48.06.99.06 May 202510 Jul 2025
Biolongevity LabsBiolongevity Labs
A
Great
47.26.87.914 Jun 20256 Dec 2025
Polaris PeptidesPolaris Peptides
A
Great
38.06.59.06 Aug 202525 Nov 2025
ScienceScience
A
Great
47.26.57.620 May 202510 Jul 2025
Shanghai Sigma Audley SSAShanghai Sigma Audley SSA
A
Great
97.66.49.84 Aug 202519 Jan 2026
PeptidologyPeptidology
A
Great
67.46.29.014 Jun 202511 Aug 2025
Tianjin Finder Chemical TFCTianjin Finder Chemical TFC
B
Good
57.25.78.716 Jul 202526 Feb 2026
OupeptideOupeptide
B
Good
87.05.68.014 Aug 202518 Feb 2026
Peptide SciencesPeptide Sciences
B
Good
68.15.69.86 May 202526 Feb 2026
YimeiYimei
B
Good
107.05.58.025 Nov 202526 Feb 2026
Zen PeptidesZen Peptides
B
Good
47.75.29.523 Oct 202517 Dec 2025
Peptide-SPeptide-S
C
Okay
87.85.010.016 Jul 202522 Feb 2026
Yiwu Aozuo Trading CoYiwu Aozuo Trading Co
C
Okay
87.94.99.94 Sep 20254 Feb 2026
PeptiLab ResearchPeptiLab Research
C
Okay
35.94.87.825 Apr 20256 May 2025
Peptides 4 ResearchPeptides 4 Research
C
Okay
45.04.85.26 May 202520 May 2025
TSC Top Supplements ChinaTSC Top Supplements China
C
Okay
86.34.88.04 Sep 20254 Nov 2025
UtherUther
C
Okay
58.04.89.59 Oct 202526 Jan 2026
Zhejiang Yichenkang BiotechnologyZhejiang Yichenkang Biotechnology
C
Okay
45.54.86.810 Jul 202520 Sep 2025
Reta-PeptideReta-Peptide
C
Okay
167.54.710.016 Jul 202520 Feb 2026
Mai PeptideMai Peptide
C
Okay
87.04.710.017 Dec 202522 Feb 2026
HXNetHXNet
C
Okay
96.94.710.017 Nov 202518 Feb 2026
LSPLLSPL
C
Okay
67.14.79.46 Nov 202522 Feb 2026
Prime PeptidesPrime Peptides
C
Okay
55.14.75.520 May 202510 Jul 2025
Wuhan Wansheng BiotechnologyWuhan Wansheng Biotechnology
C
Okay
187.54.710.04 Aug 202510 Feb 2026
Qing Li PeptideQing Li Peptide
C
Okay
268.04.710.010 Jul 202518 Feb 2026
Xingruida XDRXingruida XDR
C
Okay
87.64.710.025 Nov 20259 Feb 2026
LiliPeptideLiliPeptide
C
Okay
156.44.68.025 Sep 202526 Feb 2026
Tianjin Ruiwang New Material Technology CoTianjin Ruiwang New Material Technology Co
C
Okay
127.34.58.03 Oct 202511 Feb 2026
ZLZ PeptideZLZ Peptide
C
Okay
96.74.58.04 Aug 202519 Jan 2026
NexaphNexaph
C
Okay
56.64.38.24 Aug 20252 Feb 2026
Xian Yihang TechnologyXian Yihang Technology
C
Okay
67.14.08.010 Jul 202513 Feb 2026
Suaway Lab ResearchSuaway Lab Research
D
Poor
54.94.65.422 Apr 202510 Jul 2025
Shanxi Qianyecao Biotech QYCShanxi Qianyecao Biotech QYC
E
Bad
86.92.88.025 Sep 202522 Feb 2026
SRY LabsSRY Labs
E
Bad
74.92.68.010 Sep 20252 Feb 2026
HK PeptidesHK Peptides
E
Bad
336.72.010.016 Jul 202526 Feb 2026
Nanjing Xiyuxun Technology XYXNanjing Xiyuxun Technology XYX
X
Unrated
19.89.89.816 Jul 202516 Jul 2025
Planet PeptidePlanet Peptide
X
Unrated
15.55.55.520 May 202520 May 2025
Peptide ArkPeptide Ark
X
Unrated
14.94.94.94 Mar 20264 Mar 2026

Most recent GHK-Cu tests

Samples are tested in commercial labs

Quantity
Test DateVendorCertificate
Test Score
LabelTestedDifferencePurityBatch IDContainerTested AtSent By
26 Feb 2026Tianjin Finder Chemical TFCView8.0100mg98.6mg-1.4%99.90%(no batch ID)No Label / Silver Crimp / Clear CapLab EPublic
26 Feb 2026LiliPeptideView7.6100mg84.7mg-15.3%99.90%January 16 2026No Label / Silver Crimp / Blue CapLab EPublic
26 Feb 2026YimeiView7.550mg46.8mg-6.4%99.90%(no batch ID)No Label / Silver Crimp / Clear CapLab EPublic
26 Feb 2026HK PeptidesView8.5100mg110mg+10.0%99.90%CU100No Label / Silver Crimp / Violet CapLab EPublic
26 Feb 2026YimeiView6.9100mg91.6mg-8.4%99.90%(no batch ID)No Label / Copper Crimp / Clear CapLab EPublic
26 Feb 2026Peptide SciencesView8.250mg54.7mg+9.4%99.70%VI620251021-50White Label / Silver Crimp / Blue CapLab EPublic
26 Feb 2026YimeiView5.5100mg83.7mg-16.3%99.90%(no batch ID)(no data)Lab EPublic

Corrections

17 Nov 2025: Peptide Sciences
Test results for sample rkh8jub were published from 31 Oct to 17 Nov 2025, but did not belong to Peptide Sciences: the sample was misidentified, and re-attributed to the correct vendor.
11 Nov 2025: Peptide Powder Home
The sample was misslabaled by the requester, actual quantity for this sample is 50 mg, Quantity has been edited with correct value (previus value was 5 mg) and a new lab result.
31 Jul 2025: Peptidology
Peptidology ratings for GHK-Cu were updated from B to A, after taking into account the Batch IDs that are included on vials, but were initially not identified by Finnrick.
10 Jul 2025:
Lab E tests published 10 Jul 2025: change in testing and analysis methodology on 15 GHK-Cu tests previously published in May and June. New COAs were issued by the lab, and test scores have been updated.