Answer
Unopened Atgam ampoules should be stored in a refrigerator at 2°C–8°C, must not be frozen, and should be kept in the outer carton to protect them from light.
Sources for this answer
- Atgam 50 mg/ml concentrate for solution for infusionPfizer Limited · emc · SmPC §6.4 Special precautions for storage · Version 3Document updated
Sources checked