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When to Use Sterile Water for Injection Use sterile water for injection (preservative-free) when: your protocol specifically requires the absence of benzyl alcohol, you are performing a single-use reconstitution, or your peptides handling specifications recommend a preservative-free diluent
Many smaller or overseas suppliers are still adjusting to FDA expectations for documentation, testing, and traceability
The absorption and bioavailability with a GHK-Cu injection is dramatically higher than topical application, which means greater potential benefit AND a greater need for medical oversight
Med., 72: 719-725
