How to Store Peptides Properly

Proper storage is critical for maintaining peptide potency and stability. This guide covers everything you need to know about storing both lyophilized (powder) and reconstituted peptides.

Lyophilized (Powder) Peptides

Unreconstituted peptides in powder form are relatively stable when stored correctly.

Recommended Storage Conditions

Best Practices

• Keep vials sealed until ready to use
• Store in original packaging when possible
• Avoid repeated freeze-thaw cycles
• Use desiccant packets to control moisture

Reconstituted Peptides

Once mixed with bacteriostatic water, peptides are more fragile and require careful handling.

Storage Guidelines

1. Always refrigerate - Store at 2-8C (35-46F)
2. Protect from light - Keep in original vial or wrap in foil
3. Use within 4-6 weeks - Potency decreases over time
4. Never freeze reconstituted peptides - This can damage the molecular structure

Common Storage Mistakes

• Leaving vials at room temperature for extended periods
• Using regular water instead of bacteriostatic water
• Storing in direct sunlight
• Repeated freeze-thaw cycles

Temperature Stability Chart

Different peptides have different stability profiles:

Summary

• Store powder peptides frozen for long-term storage
• Always refrigerate reconstituted peptides
• Protect from light and moisture
• Use within recommended timeframes