Peptide Storage Best Practices for Research Labs

# Peptide Storage Best Practices for Research Labs Maintaining peptide stability is essential for reliable research outcomes. This guide covers everything you need to know about proper storage. ## Lyophilized (Powder) Peptides ### Temperature Requirements - **Long-term storage**: -20°C or below (up to 24 months) - **Short-term storage**: 2-8°C (refrigerator) for up to 3 months - **Room temperature**: Acceptable for short periods during handling only ### Environmental Factors - Keep away from direct light - Store in low humidity environment - Keep vials sealed until ready to use - Use desiccant packets in storage containers ## Reconstituted Peptides ### Temperature Requirements - **Always refrigerate**: 2-8°C - **Never freeze** reconstituted peptides - **Stability**: Most peptides stable for 14-30 days post-reconstitution ### Handling Protocol 1. Use sterile technique when accessing vials 2. Swab rubber stopper with alcohol before each use 3. Minimize the number of punctures through the stopper 4. Use appropriate syringe sizes (insulin syringes recommended) ## Common Mistakes to Avoid - Exposing peptides to repeated freeze-thaw cycles - Using non-bacteriostatic water for reconstitution - Leaving reconstituted peptides at room temperature - Contaminating vial stoppers