Recording the reconstitution date, diluent used, calculated concentration, and storage location for every vial makes it possible to audit exactly how far into its stability window a given sample sits at the time it is used in an assay
Units on the syringe: all figures assume a standard 1 mL / 100 unit insulin syringe, where 1 unit = 0.01 mL
Concentration varies significantly by brand 1% to 3% GHK-Cu concentrations are typical in serious cosmetic formulations
Scientific Reference General background on BPC-157 research grade peptide can be found at Wikipedia
Here is who really needs them, at what frequency, and how we approach them at CoLaz
You can find it in animal products like meat, fish, and dairy