Correct storage is one of the biggest factors in preserving the integrity of a research peptide. This guide covers general best-practice handling principles for the laboratory.
Lyophilised (freeze-dried) peptides
In their lyophilised form, many peptides are relatively stable. As a general principle, freeze-dried material is kept cold and dry, protected from light and moisture, and sealed until needed.
Allowing a sealed vial to reach room temperature before opening helps reduce condensation, which introduces moisture that can accelerate degradation.
After reconstitution
Once a peptide is dissolved, it generally becomes more susceptible to degradation than in its dry state. Reconstituted material is typically kept refrigerated and used within a shorter timeframe.
Repeated freeze–thaw cycles are usually minimised, as they can contribute to breakdown of the molecule. Working in small aliquots is a common laboratory practice to avoid this.
General handling principles
Protect from light, heat, and humidity; label clearly with batch and date; and always follow the specific storage guidance and Certificate of Analysis supplied with your material, which take precedence over any general advice.
These are general laboratory handling principles only. Always defer to your institution’s protocols and the documentation provided with each product.
This guide is for general educational purposes only and describes laboratory research practice. Stratum products are supplied for laboratory research use only — not for human or animal consumption. See our research use disclaimer.