Peptide Storage Guidelines
Proper storage is essential for maintaining peptide potency and safety. Learn how to store peptides before and after reconstitution.
Storage Conditions
Lyophilized (Powder)
Keep in original sealed vial, away from light and moisture
Reconstituted (Mixed)
Never freeze. Keep away from light. Use sterile technique.
Do
- Store in the refrigerator door or main compartment
- Keep vials upright to prevent stopper contact
- Use within recommended timeframe after reconstitution
- Label vials with reconstitution date and concentration
- Allow vial to reach room temperature before drawing (reduces air bubbles)
- Use alcohol swabs before each use
- Keep backup lyophilized vials for emergencies
Do Not
- Freeze reconstituted peptides (damages protein structure)
- Expose to direct sunlight or UV light
- Store near heat sources or in warm areas
- Leave at room temperature for extended periods
- Use if solution is cloudy or has particles
- Store in car, gym bag, or other temperature-variable locations
- Touch the rubber stopper with fingers
Factors Affecting Stability
Temperature
Critical ImpactHeat accelerates degradation exponentially. Every 10°C increase can halve peptide stability.
Light Exposure
High ImpactUV and visible light can break down peptide bonds. Store in dark or use amber vials if available.
Freeze-Thaw Cycles
Critical ImpactFreezing and thawing damages peptide structure. Never freeze reconstituted peptides.
Time After Reconstitution
Moderate ImpactPeptides gradually degrade in solution. Use within 4-6 weeks for optimal potency.
Signs Your Peptide May Be Degraded
Visual Signs
- • Cloudy or hazy solution
- • Visible particles or floaters
- • Color change (yellowing)
- • Clumping of powder (before reconstitution)
Other Indicators
- • Unusual odor
- • Reduced or no effects
- • Exposed to improper conditions
- • Past recommended use-by date
When in doubt, throw it out. Using degraded peptides may be ineffective or potentially harmful.
Travel Tips
Use insulated cooler bags
Keep peptides cool during short trips with ice packs or cooling elements
Bring lyophilized if possible
Unreconstituted peptides are more stable and travel better
Hotel refrigerator
Store in hotel mini-fridge upon arrival. Set to coldest setting.
Avoid checked luggage
Cargo holds can experience extreme temperatures. Keep in carry-on.