GHK Cu 50mg Particle Peptides A lot of people asked how I use GHK Cu (copper peptide) with a pen device, so here's a quick tutorial showing exactly how I do it. In this video I show how GHK Cu Injectable Team Wellcore 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 Oath Research