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The Centers for Disease Control and Prevention (CDC) adopted the code in March when the US government declared the COVID-19 pandemic a national public health emergency
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PMID 22529954
Storage duration critically impacts effectiveness - reconstituted GHK-Cu lasts only 21-28 days refrigerated due to copper oxidation concerns (shorter than most peptides), requiring strategic reconstitution of amounts usable within this window rather than preparing entire vials at once
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