how long can breast milk be stored
1 Freshly expressed milk can be stored at room temperature for up to 10 hours. 2  Colostrum or milk expressed within one week of delivery can be stored for up to 12 hours at room temperature.3  However, whenever possible, milk should be placed in the refrigerator soon after expressing. Fresh milk can be kept in the refrigerator for at least 8 days. 2  Store it toward the back. 3  Fresh milk can be kept in a self-contained freezer compartment for 3-6 months, depending on how often the door is opened.