Donor Milk Processing at Bronson Mothers' Milk Bank

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Donor Milk Processing

We make sure all donated breast milk is processed in the safest and cleanest environment for babies.

We take the following steps:

  • Donated milk arrives frozen from approved donors to the milk bank. We record who donated the milk and the date it was received. It is then stored in a temperature-controlled freezer until processing. 
  • To start the process, donated milk is thawed in our lab.
  • We examine the milk from a variety of donors, and then combine the milk so it has the most nutrition to help babies, especially babies that may be very fragile.
  • Milk is poured into bottles, secured with tamper-resistant lids, and labeled with a barcode, batch number and expiration date.
  • Next, milk is heat processed during pasteurization, which removes potentially harmful bacteria while keeping nutrients and other important immunological properties.
  • After pasteurization, the milk is tested to make sure it does not include any bacteria.
  • Bottles of milk are quickly frozen and in a temperature-controlled freezer.

We are a member of the Human Milk Banking Association of North America (HMBANA). Our process follows their guidelines.

  • Photo of infant in NICU bassinet.

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