Peptide Storage & Safety
Best storage practices, post-reconstitution stability, temperatures, and common mistakes.
Storage Temperatures
Lyophilized Powder (before reconstitution)
Refrigerator (2–8°C) for short-term storage. Freezer (−20°C) for long-term. Avoid repeated freeze-thaw cycles.
After Reconstitution
Store refrigerated (2–8°C). Use within 14–28 days depending on the peptide. Stability varies significantly between compounds.
Degradation Factors
- •Heat — accelerates deamidation and oxidation
- •Light — UV radiation breaks down sensitive amino acids (e.g. tryptophan)
- •Agitation — vigorous shaking causes denaturation
- •Contamination — non-sterile technique degrades samples
- •Repeated thawing — causes peptide aggregation
Best Practices
- ✓Use aluminum foil or dark vials for light protection
- ✓Label each vial with reconstitution date
- ✓Avoid storing on the refrigerator door (temperature fluctuations)
- ✓Use bacteriostatic water (BAC water) instead of sterile water for longer stability
- ✓Do not touch the needle or rubber stopper without sterilization
Common Mistakes
- ✗Storing reconstituted peptide at room temperature
- ✗Using an inappropriate solvent (e.g. tap water)
- ✗Shaking instead of gently swirling when mixing
- ✗Forgetting to note the reconstitution date
Related Protocols
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This page is educational. Always follow manufacturer instructions and consult a professional.
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