To preserve the integrity of laboratory results, proper storage of peptides is essential. Correct storage practices can maintain peptides for years Once peptides have been received, it is imperative that they are kept cold and away from light. If the peptides will be used immediately, or in the next several days, weeks or months, short-term refrigeration under 4C (39F) is acceptable. Longer term storage (several months to years) it is preferable to store in a freezer. Avoid repeated freeze-thaw cycles. This can increase the peptide’s susceptibility to degradation