Peptide Storage Protocol
Proper storage is the most overlooked aspect of peptide handling. Temperature, light, and moisture are the enemies of peptide stability. Understanding storage requirements preserves potency and prevents using degraded, potentially harmful products.
Key Points
Step-by-Step Guide
Store Lyophilized Peptides
Unreconstituted powder: freezer at -20°C or colder. Stable for 1-2+ years. Keep in sealed vials with any included desiccant. Original packaging protects from light.
Store Reconstituted Peptides
Once mixed with BAC water: refrigerator at 2-8°C. Stable for 4-6 weeks depending on the peptide. Never re-freeze reconstituted solutions.
Protect from Light
Many peptides are light-sensitive (especially Melanotan II, GHK-Cu). Wrap vials in foil or store in opaque containers. Keep in the back of the fridge away from the door light.
Minimize Handling
Each vial puncture introduces contamination risk. Draw dose and return to fridge promptly. Do not leave vials at room temperature during prep—work quickly.
Recognize Degradation
Cloudy solution, particles, color change, or unusual smell = degraded. Lyophilized powder that has melted, clumped, or changed color may have been heat-exposed. When in doubt, discard.
Warnings & Precautions
- !Never re-freeze reconstituted peptides.
- !Discard any solution that is not crystal clear.
- !Repeated freeze-thaw cycles destroy lyophilized peptides.
- !Room temperature storage dramatically shortens peptide life.
- !Check BAC water expiration—expired preservative fails to prevent bacterial growth.
Frequently Asked Questions
Can I travel with peptides?
Reconstituted: use an insulated cooler bag with ice packs. Lyophilized: more temperature-stable, can tolerate brief room temp periods. For air travel, keep in carry-on with labeling.
How can I tell if a peptide has degraded?
Reconstituted: cloudiness, particles, color change, unusual smell. Lyophilized: melting, clumping, or discoloration. If the cap seal was broken or storage conditions unknown, assume degraded.
Does bacteriostatic water expire?
Yes. Manufacturer date is typically 1-2 years. Once opened, use within 28 days. Expired BAC water may not prevent bacterial growth effectively.