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Can You Freeze Breast Milk After It Has Been in the Refrigerator?

If breast milk is frozen and then thawed at room temperature or in the refrigerator, it should not be refrozen, according to Katrina Pinkerton, a New Haven-CT-based lactation consultant. However, if breast milk has been refrigerated since immediately after being expressed, it is less than 5 days old and the baby's mouth has not made contact with it, it is safe to freeze it to use at a later time, says Pinkerton. “The concern is bacteria level, and what type of bacteria would be present in the milk,” she says.

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