GHK has been studied since 1973. Most labs still ship it without copper. Our COA shows the Cu(II) binding signature. 99%+ HPLC, copper complex verified, full COA per batch. 99%+ HPLC. Independent COA GHK CU COPPER PEPTIDE POWDER (60 CAPSULES) (2MG CAPSULE, 120MG TOTAL BOTTLE) UMBRELLA Labs GHK Cu Oath Research GHK CU Pure Pharma Australia
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