Lyophilized peptide vials are stable at room temperature for 12-24 months, but refrigeration extends life and is recommended for long-term storage. Once reconstituted, store at 2-8°C (refrigerator) and use within 30 days — after 30 days the bacteriostatic water no longer reliably preserves sterility. Avoid freezing reconstituted vials repeatedly (freeze-thaw cycles degrade the peptide). Heat above 25°C and direct sunlight kill peptides faster than people think.
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