The lactation specialist at my hospital said it's good for 12 hours no refrigeration. 36 hours refrigeration. 1 month in the door of a normal freezer. 3 months in a deep freeze.
Room temperature. Freshly expressed breast milk can be kept at room temperature for up to six hours. If you won't use the milk that quickly or the room is especially warm, transfer the milk to an insulated cooler, refrigerator or freezer.
Insulated cooler. Freshly expressed breast milk can be stored in an insulated cooler with ice packs for up to one day. Then use the milk or transfer the containers to the refrigerator or freezer.
Refrigerator. Freshly expressed breast milk can be stored in the back of the refrigerator — not the door — for up to five to eight days.
Freezer. Freshly expressed breast milk can be stored in a standard refrigerator freezer for up to three to six months and in a chest freezer for up to six to 12 months. Place the milk in the back of the freezer — not the door.
1 year in the deep freezer
4-5 days in the fridge
3-5 hours outside