How long can an unopened Enspryng 120 mg pre-filled syringe be kept outside the refrigerator in its outer carton, and can it then be refrigerated again?

An unopened Enspryng 120 mg pre-filled syringe kept in its outer carton may remain outside the refrigerator below 30°C for a single period of up to 8 days, after which it must not be refrigerated again and should be used or discarded.