GHK-Cu is found in blood plasma and is an FDA-approved ingredient in topical antiaging cosmetics but it is currently banned as an injectable because of safety concerns, such as the risk of immune reactions caused by impurities
Results can be affected by the timing of the test, your diet, your supplements and medications and even the specific lab method that is used
By preserving non-covalent interactions and analyzing intact complexes, nMS is an important analytical technique that provides details on protein folding, protein-protein interactions, protein-ligand binding, post-translational modifications, proteoform characterization, as well as complex heterogeneity, stability, and assembly, composition and identity of subunits, and assembly and dissociation pathways (Heck, 2008
2006 PMID 16583442)