Source comparison
CJC-1295 No DAC Storage: Lyophilised vs Reconstituted
Lyophilised (unreconstituted) −20°C (freezer) 12–24 months Minimal. Oxidation only in trace moisture None. Powder remains white/off-white Gold standard for long-term storage; no potency loss if kept dry 2–8°C (refrigerator) 6–12 months Slow oxidation, negligib
This comparison does not assign a generated winner or score.
- Lyophilised (unreconstituted)
- −20°C (freezer)
- 12–24 months
- Minimal. Oxidation only in trace moisture
- None. Powder remains white/off-white
- Gold standard for long-term storage; no potency loss if kept dry
- 2–8°C (refrigerator)
- 6–12 months
- Slow oxidation, negligible hydrolysis
- None. Visually stable
- Acceptable alternative if freezer unavailable; slight potency decline after 6 months
- 20–25°C (room temp)
- 30–60 days
- Accelerated oxidation, moisture absorption
- Possible clumping if humidity >60%
- Emergency short-term option only; should not be routine practice
- Reconstituted with bacteriostatic water
- 28 days
- Slow hydrolysis, minimal aggregation
- Slight cloudiness after 21+ days
- Standard protocol; discard after 28 days regardless of appearance
- 2–4 hours
- Rapid hydrolysis, aggregation, oxidation
- Cloudiness appears after 8–12 hours
- Unacceptable. 15–20% potency loss per 4 hours at this temperature
- >30°C (heat exposure)
- <1 hour
- Extreme hydrolysis, immediate aggregation
- Visible precipitate within 6–12 hours
- Complete loss of activity; vial should be discarded immediately
- The table above reflects measured degradation data from peptide stability studies conducted under controlled conditions. Real-world degradation may be faster due to light exposure, contamination, or pH drift. The 28-day limit for reconstituted peptides is conservative. Some labs use 21 days to build in a safety margin.