NEA Diagnostics

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Cosmetic

GHK Cu

Copper tripeptide 1

Copper content and tripeptide purity both need confirming on every lot. Skin and cosmetic research.

B

Good

Catalog average across 207 samples

97.3%

Average purity

96%

Average of label dose

207

Samples tested

15

Vendors ranked

Grade distribution

How the ranked vendors fall across the grade scale.

A

3

B

1

C

3

D

3

E

5

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GHK Cu vendor ranking

15 vendors

RankVendorPurityOf labelGrade

01IQONUnited States99.5%100.1%A Great 02Huayi BiotechnologyChina99.1%98%A Great 03Yiwu Aozuo Trading CoChina98.2%97.2%A Great 04Qing Li PeptideChina96.9%98.6%B Good 05Wuhan Wansheng BiotechnologyChina96.1%93.2%C Okay 06Marvel PepUnited States96.1%89%C Okay 07SRY LabsUnited States95.7%93.3%C Okay 08Limitless LifeUnited States94.8%97.2%D Poor 09Nuscience PeptidesUnited States94.8%93.3%D Poor 10Reta-PeptideUnited States94.3%95.2%D Poor 11YimeiChina94%84.7%E Bad 12Amino LairUnited States92.7%90.6%E Bad 13Aavant ResearchUnited States91.2%81.2%E Bad 14ZLZ PeptideChina86.5%86.1%E Bad 15Golden EagleUnited States87.6%80.4%E Bad

Published certificates

99.88% purity, 101.9% of label, 27 Jun 2026

A

99.8% purity, 100.2% of label, 23 May 2026

A

99.8% purity, 100.3% of label, 18 Apr 2026