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This guide shows how long breast milk keeps and how to store, thaw and warm it safely, following the CDC.
Freshly pumped milk keeps up to 4 hours at room temperature (77°F or colder), up to 4 days in the refrigerator, and about 6 months in the freezer (up to 12 months is acceptable). Thawed milk should be used within 24 hours if thawed in the fridge, or within 2 hours once warmed or at room temperature, and should never be refrozen. Leftover milk from a feeding should be used within 2 hours.
Never thaw or heat breast milk in the microwave. Freeze it in 2 to 4 ounce portions and store it at the back of the fridge or freezer.
Freshly expressed milk can stay at room temperature (77°F or colder) for up to 4 hours.
Fresh breast milk keeps up to 4 days in the refrigerator. Milk thawed in the fridge should be used within 24 hours of being fully thawed.
No. Never refreeze breast milk after it has thawed.
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