Storage / Reference
Peptide storage: a temperature guide.
Correct storage is the single biggest factor in peptide reference-standard shelf life. Here is what Lumera Labs recommends.
Lyophilized, sealed
All Lumera Labs reference standards ship lyophilized and sealed under inert gas. In that format:
- −20°C — standard long-term storage. 24+ months shelf life, per-lot validated.
- −80°C — deeper stability for multi-year research programs. Not required for < 2 year retention.
- 2–8°C (refrigerated) — acceptable short-term (weeks to 2 months) but not recommended for lots you intend to keep.
- Ambient — do not store at ambient. Hydrolysis begins within weeks.
Freezer recommendations
Any research-grade −20°C chest or upright freezer with temperature logging is sufficient. A single-probe data logger in the freezer provides audit evidence if a lot is ever questioned. Avoid frost-free freezers — the thaw cycles introduce temperature excursions.
Post-handling stability
Products are sold as lyophilized reference standards only. For any post-handling stability questions, reference your own experimental protocol and internal SOPs — Lumera Labs does not publish post-handling guidance because it falls outside the scope of a laboratory reference standard.
Receiving a shipment
On arrival, move vials to −20°C immediately. Check that gel packs are still firm (partial slushiness is acceptable within the 48-hour window). Full cold-chain guide.
Continue reading