Source comparison
TB-500 Storage: Refrigerated vs Frozen vs Lyophilised Comparison
Lyophilised (pre-mix) −20°C to −80°C 24–36 months 98–99% at 24 months Yes. Add bacteriostatic water before use Gold standard for long-term storage. Peptide remains stable in powder form for years Refrigerated (post-mix) 2–8°C 28 days maximum 95–98% at 28 days
This comparison does not assign a generated winner or score.
- Lyophilised (pre-mix)
- −20°C to −80°C
- 24–36 months
- 98–99% at 24 months
- Yes. Add bacteriostatic water before use
- Gold standard for long-term storage. Peptide remains stable in powder form for years
- Refrigerated (post-mix)
- 2–8°C
- 28 days maximum
- 95–98% at 28 days if stored properly
- No. Ready to draw
- Required storage method after reconstitution. Peptide degrades rapidly beyond 28 days
- Frozen (post-mix)
- −20°C
- Not recommended
- 60–75% after one freeze-thaw cycle
- Yes. Thaw required before each use
- Ice crystals disrupt peptide structure. Freezing post-reconstitution is a protocol error
- Room temperature (post-mix)
- 20–25°C
- 12–24 hours (emergency only)
- 85–90% at 24 hours, <50% at 7 days
- No
- Acceptable only during travel or short-term transport. Never as standard storage
- Refrigerator door storage
- 4–12°C (fluctuating)
- 28 days nominal
- 70–85% due to temperature swings
- Common mistake. Door temp varies 3–5°C per opening, degrading peptides faster than stable refrigeration