I'm positive the milk bank can provide you with that sort of information.
And positive that banked milk will help this child.
Dr. Lawrence's book "Breastfeeding, A Guide for the Medical Profession"
which has an excellent chapter on donor milk banking.
Linda J. Smith, BSE, FACCE, IBCLC
Bright Future Lactation Resource Centre
Dayton, OH USA
http://www.bflrc.com