How to Read a GHK-Cu Certificate of Analysis
What KYIN Peptides' GHK-Cu certificate of analysis actually reports, and how to independently verify it.
What KYIN's GHK-Cu COA Reports
Every batch of KYIN's GHK-Cu is independently tested by Janoshik to 99.814% purity. The certificate reports an HPLC purity result and a mass spectrometry identity confirmation verifying the sample's molecular weight matches the copper-complexed tripeptide structure, distinguishing it from the uncomplexed GHK tripeptide without bound copper.
Why This Isn't the Same as a Skincare Copper Peptide Serum
It's worth being clear about what a GHK-Cu certificate of analysis is verifying: KYIN's GHK-Cu is a lyophilized (freeze-dried) research peptide intended for laboratory reconstitution, not a pre-mixed topical copper-peptide serum sold for skincare. Both contain the same underlying molecule, but they are different products manufactured and tested for different purposes, and a research-grade certificate of analysis should not be interpreted as cosmetic product testing.
How to Verify Independently
To confirm a GHK-Cu certificate matches a genuine, independently tested batch, look up the batch number at Janoshik's public verification tool, janoshik.com/verify. This is especially worth doing given how many differently-labeled copper-peptide products exist across both research and cosmetic markets. Our general How to Read a Certificate of Analysis guide covers the fundamentals shared across every compound KYIN sells.
GHK-Cu testing questions
What purity does KYIN Peptides' GHK-Cu meet?
KYIN Peptides' GHK-Cu is independently tested by Janoshik to 99.814% purity, with mass spectrometry identity confirmation of the copper-complexed structure — see the current batch's certificate of analysis on the product page.
Is KYIN's GHK-Cu the same as a skincare copper peptide product?
No — KYIN's GHK-Cu is a lyophilized research peptide for laboratory reconstitution, not a pre-mixed topical cosmetic serum. Both contain the same underlying molecule but are manufactured and tested as different products for different purposes.
Interested in GHK-Cu?
See pricing, current batch purity, and the full certificate of analysis on the product page.