Source comparison
Signs MOTS-c Gone Bad Degraded: Storage Method Comparison
Lyophilized at −20°C (vacuum-sealed, desiccated) 12–24 months Minimal if no freeze-thaw cycles Powder discoloration (yellow/amber), loss of vacuum seal (flat stopper) Gold standard for long-term storage. Requires dedicated non-frost-free freezer Lyophilized at
This comparison does not assign a generated winner or score.
- Lyophilized at −20°C (vacuum-sealed, desiccated)
- 12–24 months
- Minimal if no freeze-thaw cycles
- Powder discoloration (yellow/amber), loss of vacuum seal (flat stopper)
- Gold standard for long-term storage. Requires dedicated non-frost-free freezer
- Lyophilized at 4°C
- 6–9 months
- Moderate. Hydrolysis accelerates 3–4× vs −20°C
- Gradual color shift, clumping on reconstitution
- Acceptable for short-term storage only; avoid if −20°C available
- Reconstituted at 2–8°C (bacteriostatic water)
- 28 days maximum
- Low if refrigerated continuously
- Cloudiness, particulate matter, odor
- Standard protocol for in-use vials. Strict 28-day discard rule required
- Reconstituted at room temperature
- 24–72 hours
- Severe. Loses 50%+ potency within 48 hours
- Rapid cloudiness, visible aggregation, color change
- Unacceptable for any research protocol. Functional loss occurs before visual change
- Repeated freeze-thaw (lyophilized or reconstituted)
- Potency loss of 5–10% per cycle
- High. Cumulative structural damage
- May appear normal initially, clumping develops over cycles
- Avoid entirely. Use single-use aliquots instead
- This comparison demonstrates why storage discipline is non-negotiable. The 28-day post-reconstitution window at 2–8°C is based on bacteriostatic water's antimicrobial efficacy, not peptide chemical stability. The peptide itself begins degrading immediately upon reconstitution, and refrigeration only slows the process. After 28 days, even a visually clear solution has lost measurable potency.