Understand the source comparison
ARA-290 Storage: Temperature Comparison
Lyophilized (unopened) −20°C 12–24 months Can tolerate 25°C for 24–48 hours during shipping None. Dry powder stable Industry standard for long-term peptide storage; maximizes shelf life and minimizes degradation Reconstituted (bacteriostatic water) 2–8°C 28–30
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This page preserves a source comparison for education. It does not add a rating, recommendation or clinical judgment.
- Lyophilized (unopened)
- −20°C
- 12–24 months
- Can tolerate 25°C for 24–48 hours during shipping
- None. Dry powder stable
- Industry standard for long-term peptide storage; maximizes shelf life and minimizes degradation
- Reconstituted (bacteriostatic water)
- 2–8°C
- 28–30 days
- Any excursion above 8°C accelerates degradation; even 10°C shortens usable window
- High. A single freeze reduces activity 20–40%
- Requires strict refrigeration; most labs lose potency here due to inconsistent temp control
- Reconstituted (room temp)
- Not recommended
- Hours to days
- Peptide denatures within 4–8 hours at 20°C or higher
- N/A. Liquid at room temp
- Worst-case scenario; used only for immediate dosing within minutes of reconstitution
- Ultra-low temp (−80°C)
- Acceptable for lyophilized only
- 24+ months
- Stable indefinitely in dry form
- Never freeze liquid. Causes irreversible aggregation
- Common in institutional labs; overkill for most research but doesn't harm lyophilized peptides