Proper storage is essential to maintain the quality, stability, and effectiveness of peptides. When stored correctly, peptides retain their structure and remain potent for longer periods. Below is a clear guide you can use to ensure your peptides remain in optimal condition.
Why Proper Storage Matters
Peptides are sensitive compounds that can degrade when exposed to heat, light, moisture, or frequent temperature changes. Correct storage helps preserve purity, maintain potency, and extend shelf life.
Storing Lyophilized (Powder) Peptides
Lyophilized peptides are more stable and have a longer shelf life compared to mixed or liquid peptides.
Short-Term Storage: Up to 4 to 6 Weeks
• Store in a cool and dry area inside the refrigerator
• Ideal temperature: 2°C to 8°C
Long-Term Storage: Up to 12 to 24 Months
• Store in the freezer
• Ideal temperature: -20°C
Keep peptides sealed in their original vials until use. Exposure to moisture or air can reduce stability.
Storing Reconstituted Peptides
Once a peptide is mixed with bacteriostatic or sterile water, it becomes more sensitive and needs careful handling.
Refrigeration Required
• Store at 2°C to 8°C
• Approximate shelf life:
• With bacteriostatic water: up to 20 to 30 days
• With sterile water: up to 3 to 7 days
Do not freeze reconstituted peptides, as freezing can damage the peptide structure and reduce effectiveness.
Storage Best Practices
• Keep vials protected from light and heat
• Avoid opening vials more often than needed
• Prevent sudden temperature changes
• Do not shake the vial. Gently rotate if needed
• Use sterile tools and keep the environment clean to avoid contamination
Label each vial with the date of reconstitution for reference.
Common Storage Mistakes to Avoid
• Leaving reconstituted peptides at room temperature
• Exposing vials to sunlight or warm areas
• Storing unsealed or partially closed vials
• Allowing moisture or contaminants to enter the vial
Final Notes
Following the proper storage guidelines will help maintain the quality and intended performance of your peptides. Quality products combined with proper handling and storage are key to achieving consistent results.