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Storing Breastmilk

You can express breastmilk and store it in clean containers. Your partner or a sitter can feed your milk to the baby. This way, your baby gets the benefits of breastmilk even when you can’t be there at feeding time.

Type of Storage

Storage Times

Room temperature

 

  • At room temperature (up to 77°F or 25°C)

  • Tip: Keep the container covered and cool.

6 to 8 hours

Refrigerator

 

  • In a refrigerator (39°F or 4°C)

  • Tip: Place milk in the back of the main body of the refrigerator.

5 days

Refrigerator freezer

 

  •  Tip: Store milk toward the back of the freezer.

 

  •  Freezer compartment (5°F or -15°C)

2 weeks

  •  Freezer compartment with separate doors (0°F or -18°C)

3 to 6 months

Chest or upright deep freezer (-4°F or -20°C)

6 to 12 months

Guidelines for Breastmilk Storage

Always use a clean container to collect and store breastmilk. Never pour warm expressed breastmilk into a bottle with cold milk. And be sure to label and date each bottle of milk. To store breastmilk safely, see the chart below.

Source: Academy of Breastfeeding Medicine Protocol Committee. (Original protocol March 2004; revision 1 March 2010.)

Warming Stored Milk

Baby bottle filled with milk in measuring cup of water.

Thaw frozen breastmilk in the refrigerator or in a bowl of warm water. Before using it, warm any breastmilk that has been in the refrigerator. For your baby’s safety:

  • Use the oldest milk first

  • Warm a container of milk by putting it in a bowl of hot water for a few minutes. Or, use a bottle warmer set on low.

  • Gently swirl the milk to mix it. Then spill a few drops on your wrist. The milk should be near room temperature.

  • DO NOT put the milk in a microwave. This could create pockets of hot liquid that can burn the baby’s mouth.

 

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