Academy · Beginner
Peptide Storage Guide
How to store lyophilised and reconstituted research peptides to preserve potency: temperature, light, moisture and time windows.
Lyophilised (powder) storage
Sealed lyophilised peptide is stable for 24+ months at -20°C. Many compounds are stable for several months at 2–8°C. Avoid moisture: do not open the vial outside controlled humidity, and keep the rubber stopper intact.
Reconstituted (liquid) storage
Once dissolved in bacteriostatic water, most peptides remain stable at 2–8 °C for about 2 months. GLP-1 analogues and shorter peptides skew toward the longer end; very labile peptides toward the shorter end. Keep them upright, in the dark.
Freeze/thaw cycles
Avoid repeated freeze/thaw on reconstituted solutions. If you must freeze, aliquot first so you can thaw only what you need.
Frequently asked questions
Can I freeze reconstituted peptides?+
Yes, but only with aliquots — repeated freeze/thaw degrades most peptides.
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