For research use only. Not for human consumption. Not medical advice — consult a licensed clinician.

Independent test result

GHK-Cu

by Real Peptides

Purity not on file· tested December 15, 2025

New to reading a COA? See how to read a peptide COA →

How this batch compares

This batch has no measured purity on file. Across all vendors, GHK-Cu averages 99.64% over 286 COAs.

85.6% 100.0%
Peptide avg (286 COAs) 99.64%
Compare pricing

See GHK-Cu pricing across 60 verified vendors

Merit's price comparison page pulls current listings so you can cross-check purity history vendor by vendor before you buy.

Keep exploring

See more evidence