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Yes, for long-term storage, lyophilized (unmixed) GHK-Cu should be kept in a refrigerator or freezer

Cerficates of Analysis are readily available on the Xcel Peptides website
doi: 10.1016/j.neuroscience.2016.06.050

However, comprehensive safety data for the specific triple combination in humans is limited

Furthermore, the latter group has a very thick slime layer, which includes several antibacterial components, such as antibodies, complement and bacteriolytic enzymes (Murray and Fletcher, 1976
At the higher 30-unit (6mg) dose, the vial lasts approximately 13 days
