Peptide Storage and Handling: Best Laboratory Practices
Essential guidelines for the proper storage, reconstitution, and handling of research peptides to maintain integrity and purity.
Proper storage and handling of research peptides is critical to maintaining their structural integrity and biological activity. Peptides are inherently sensitive molecules that can degrade through several mechanisms including hydrolysis, oxidation, and aggregation.
Storage Conditions
Lyophilized (freeze-dried) peptides should be stored at -20°C or below, protected from light and moisture. Under these conditions, most peptides remain stable for 24 months or longer. Avoid repeated freeze-thaw cycles, which can accelerate degradation.
Reconstitution Protocol
When reconstituting peptides, use bacteriostatic water (BAC water) for solutions intended for extended use, as the benzyl alcohol preservative inhibits microbial growth. For water-insoluble peptides, a small amount of acetic acid (0.1%) or DMSO may be required as a co-solvent.
Contamination Prevention
Always use sterile technique when handling reconstituted peptides. Use a new sterile needle for each withdrawal, and discard any solution that appears cloudy or discolored.
Disclaimer: This article is for informational and educational purposes only. It does not constitute medical advice. All research peptides discussed are intended for laboratory use only and are not approved for human consumption.