Why Storage Matters
Peptides are sensitive molecules. Improper storage can lead to degradation, reduced potency, or complete loss of activity. Understanding the correct storage conditions is essential for maintaining research integrity.
Lyophilised (Freeze-Dried) Peptides
- Temperature: 2–8°C (standard refrigerator). Long-term storage at -20°C is acceptable for extended shelf life.
- Light: Keep vials away from direct light. Amber or foil-wrapped vials are preferable.
- Moisture: Store in a dry environment. Avoid repeated temperature cycling (in and out of the fridge).
- Shelf life: Typically 12–24 months when stored correctly.
Reconstituted Peptides
- Temperature: 2–8°C only. Do not freeze reconstituted solutions.
- Shelf life: 28 days when reconstituted with bacteriostatic water.
- Light: Store in the dark or wrap the vial in foil.
What Degrades Peptides
- Heat above 25°C
- Repeated freeze-thaw cycles (reconstituted)
- UV light exposure
- Contamination from non-sterile handling
Travel and Transport
When transporting lyophilised peptides, use an insulated cool pack to maintain temperature below 25°C. Short periods at room temperature (under 24 hours) are generally acceptable for lyophilised powder. For guidance on correctly reconstituting your peptide before storage, see our reconstitution guide.