Understand the source comparison
Glow Stack Temperature Storage Comparison
Lyophilized powder (unopened) −20°C or colder 12–24 months Slow hydrolysis, 15–20% monthly potency loss above 4°C Freezer thermometer (analog or digital with min/max logging) Lyophilized powder (shipping) Ambient (up to 25°C) 24–48 hours max Minimal degradatio
No winner is assigned.
This page preserves a source comparison for education. It does not add a rating, recommendation or clinical judgment.
- Lyophilized powder (unopened)
- −20°C or colder
- 12–24 months
- Slow hydrolysis, 15–20% monthly potency loss above 4°C
- Freezer thermometer (analog or digital with min/max logging)
- Lyophilized powder (shipping)
- Ambient (up to 25°C)
- 24–48 hours max
- Minimal degradation if brief; avoid exceeding 72 hours
- Temperature data logger in packaging
- Reconstituted solution
- 2–8°C (refrigerated)
- 28 days
- Oxidation, aggregation, 10–15% weekly potency loss above 8°C
- Refrigerator thermometer in main compartment (not door)
- Reconstituted during transport
- 2–8°C (active cooling)
- 36–48 hours
- Irreversible denaturation above 15°C for >4 hours
- FRIO wallet or verified medical cooler with temp log
- Post-thaw (previously frozen reconstituted)
- Do not re-freeze
- Single use recommended
- Ice crystal damage on subsequent freeze-thaw
- Visual: cloudiness or precipitate indicates aggregation