OPA-based assays are more sensitive but unstable, which affects accuracy and precision [86], whereas DTNB-based assays allow for determination of biothiols in the presence of other amino acids and polyphenolic antioxidants but are less sensitive [82]
However, patience is key, as initial darkening may occur before brightening, as explained in the product guidelines
Comparison of GHK-Cu Storage Methods To help visualize the best practices for GHK-Cu storage , our team has put together a quick comparison table for different scenarios
[DOI] [PubMed] [Google Scholar] 25.Lillig C.H., Berndt C., Vergnolle O., Lnn M.E., Hudemann C., Bill E., Arne H
Keep track of how often you have bowel movements and how you feel