Peptide Storage: Lyophilized and Reconstituted Guidelines
What Damages a Peptide?
- Heat: speeds up breakdown
- Light: can degrade sensitive sequences
- Moisture: lyophilized powder absorbs water from the air
- Temperature swings: repeated warming and cooling shortens shelf life
How Should Lyophilized Vials Be Stored?
Unopened, sealed vials are normally kept cold and dark. Check the storage temperature stated on the label or COA, as it can differ by peptide.
Is Room Temperature Exposure a Problem?
Short periods at room temperature are generally tolerated by dry powder, but vials should be returned promptly to proper storage.
Full detail: How should peptides be stored?
Frequently Asked Questions
How should unopened peptide vials be stored?
Keep sealed lyophilized vials cold, dark and dry, at the temperature stated on the label or certificate of analysis.
How long does a reconstituted peptide last?
Sources vary from about a week to around a month when refrigerated, and some peptides such as NAD+ are much less stable. Follow the supplier's guidance for your specific peptide.
Does repeated freezing and thawing harm peptides?
Repeated temperature swings can shorten shelf life, so many guides advise against freezing and thawing a reconstituted vial repeatedly.
Related articles
- I'm New to Peptides: Where Do I Start?
- Why Are Peptides Supplied as a Powder?
- Peptide Measurement Guide: mg, mcg and Units
- Peptide Appearance and Color Guide
Educational resource only. This information is not medical or legal advice, and Peptide Authority does not offer peptides or any products for use.