Temperature Requirements by Storage State
Lyophilized peptides should be stored at -20°C for long-term stability, lasting 2-3 years when properly stored. Reconstituted peptides require refrigeration at 2-8°C and typically remain stable for 2-4 weeks.
The Danger Zone
Temperatures above 25°C accelerate peptide degradation exponentially. Room temperature storage can reduce peptide potency by 50% or more within days. Always prioritize consistent cold storage.
Freezer vs. Refrigerator Storage
Never freeze reconstituted peptide solutions. Ice crystal formation physically damages peptide structures. Only lyophilized (freeze-dried) peptides should be stored in freezers.
Temperature Monitoring
Use calibrated thermometers to verify storage temperatures. Avoid frequent temperature fluctuations by storing peptides in the main refrigerator compartment, not the door. Consider backup cooling if power outages are common.
Travel and Transport
Use insulated coolers with gel packs for transporting reconstituted peptides. Keep transport time under 4 hours when possible. Monitor temperatures during transport to ensure they remain within acceptable ranges.
Signs of Temperature Damage
Cloudiness, precipitation, or color changes may indicate temperature-related degradation. Peptides exposed to heat may lose biological activity even if they appear unchanged visually.
This information is for research purposes only and is not medical advice. Maintain proper cold chain protocols for all peptide research.