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Both are available at Peptides Costa Rica
YES Use plain sterile water, freeze after reconstitution NO Go to next step Does the supplier recommend a specific solvent
Chromatographic conditions employ a C18 reversed-phase column, with acetonitrilewater solution (adjusted to an appropriate acidity with phosphoric acid) as the mobile phase
Third-party lab tested with a published Analytical Data Sheet (ADS), documented purity, and same-day domestic shipping
Nobody has published human pharmacokinetics showing what happens to the copper after a subcutaneous GHK-Cu injection: how much dissociates locally, how much reaches the liver, whether repeated administration accumulates, what happens to ceruloplasmin and serum copper over weeks