Understand the source comparison
DSIP Stability: Storage Method Comparison
−80°C (ultra-low freezer) 24+ months Not applicable Minimal. Oxidation nearly halted Gold standard for long-term storage; impractical for most labs −20°C (standard freezer) 12–18 months Not recommended (ice crystal formation) Low if no freeze-thaw cycling Stan
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This page preserves a source comparison for education. It does not add a rating, recommendation or clinical judgment.
- −80°C (ultra-low freezer)
- 24+ months
- Not applicable
- Minimal. Oxidation nearly halted
- Gold standard for long-term storage; impractical for most labs
- −20°C (standard freezer)
- 12–18 months
- Not recommended (ice crystal formation)
- Low if no freeze-thaw cycling
- Standard for lyophilized stock; aliquot before first thaw
- 2–8°C (refrigerator)
- 6–9 months (powder degrades slowly)
- 28 days maximum
- Moderate. Hydrolytic cleavage accelerates
- Required for reconstituted vials; use within 4 weeks
- Room temperature (20–25°C)
- 48–72 hours before measurable loss
- 6–12 hours before aggregation begins
- High. Oxidation and aggregation accelerate
- Acceptable only during active use; return to cold storage immediately
- Ambient with light exposure
- 24 hours before visible discoloration
- 2–4 hours before functional loss
- Very high. UV oxidation is irreversible
- Never store in clear vials under lighting; always use amber or foil wrap