How to Store Peptides: Temperature and Stability Guide

Peptide Storage Guidelines

Proper storage is essential for maintaining peptide stability and ensuring valid research results. This guide covers everything you need to know about peptide storage.

Temperature Requirements

Lyophilized Peptides (Powder Form)

Long-term: -20°C to -80°C

Short-term (< 1 month): 2-8°C

Room temperature: Acceptable for shipping only

Reconstituted Peptides

Store at 2-8°C (refrigerator)

Never freeze reconstituted peptides

Use within 3-4 weeks

Light Sensitivity

Many peptides are sensitive to light exposure:

Store in original amber vials when possible

Keep in dark environment

Wrap in aluminum foil if needed

Humidity Considerations

Moisture can degrade lyophilized peptides:

Keep vials sealed until ready for use

Use desiccants in storage containers

Avoid opening vials in humid environments

Signs of Degradation

Watch for these indicators of compromised peptides:

Color changes

Unusual odor

Difficulty dissolving

Inconsistent research results

Best Practices Summary

Store lyophilized peptides frozen (-20°C or below)

Protect from light

Minimize freeze-thaw cycles

Keep reconstituted peptides refrigerated

Document storage conditions

Following these guidelines will help ensure your research peptides remain stable and effective for their intended purpose.