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Regardless of the diluent used, single-dose vials should never be shared between patients, as this significantly increases the risk of contamination and infection

The term purity is most accurate when applied to raw peptide materials, isolated compounds, or lyophilized peptide powders where a single active compound is measured against potential impurities

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While the size difference between tripeptides and heptapeptides (e.g., CyRL-QN15) may appear modest in terms of amino acid count, this difference may significantly influence their structural complexity, biological activity, and interaction with cellular targets