Buy GHK-Cu UK research grade copper peptide from Peptides Lab UK. GHK-Cu (Copper Tripeptide-1) is a naturally occurring tripeptide (Glycyl-L-histidyl-L-lysine) bound to a copper ion. It is one of the most-studied compounds in dermatology and matrix-biology research literature, frequently referenced in pre-clinical models of extracellular-matrix remodelling and gene-expression studies. Supplied as a lyophilised powder in a sealed amber vial. Third-party HPLC-verified to greater than 99% purity, with a batch-specific Certificate of Analysis available on request. Same-day UK dispatch on orders placed before 3pm, plain discreet packaging. For laboratory and in vitro research use only. Not for human consumption. Not a medicine.