Proper storage is vital for maintaining the stability and integrity of peptides. Peptides in their lyophilised (freeze-dried) form are safe for transport as they are protected from UV light and remain stable in a freeze-dried state. However, we recommend refrigerating them as soon as possible upon arrival to ensure proper storage and extend their longevity.

We take storage seriously. We maintain peptides in a controlled environment with a temperature-controlled walk-in freezer and three medical fridges, all closely monitored for optimal temperature stability. Peptides stored at -20°C in a freezer will remain stable for up to 48 months, making this ideal for long-term storage. When you receive peptides, it’s best to store them immediately in your refrigerator (2-8°C) or freezer (-20°C) for extended preservation. For added protection, you can also purchase one of our storage cases.

Note: Peptides degrade gradually over time, and degradation doesn’t mean reduced integrity initially. However, as peptides break down, they can lose their structure and charge, leading to fragmentation and eventual loss of structural integrity.

For an easy way to estimate how long a peptide may remain stable under different research storage conditions, try our Peptide Stability & pH Calculator. This tool factors in peptide form, storage temperature, and pH to provide a research-based stability estimate.