Important Note from Park Slope Parents: Please note that milk collected and donated privately generally does not meet the standards of the Human Milk Banking Association of North America. These standards may be reviewed at the organization's website.
See also this FDC resource: Use of Human Donor Milk.
Breast milk donation–related organizations
Note: Each organization has standards of what they accept from milk donations, include things like adequate temperature storage, you and your baby’s health, and even time spent living abroad.
Further reading online
Breast Milk Donated or Sold Online is Often Tainted, Study Says, via The New York Times
Milk Donation and Sharing, via La Leche League
Does Park Slope Parents allow posts about Donating or ISO Breastmilk?