Maddie Knier is a senior scientist in the Immunohematology Reference Lab at Versiti Wisconsin. She has previously worked for Duke University Transfusion Services and Children’s Hospital of Wisconsin Transfusion Services before transferring to her current position within the IRL in 2013. Maddie obtained her SBB certification in 2014 and has worked on many projects within the lab. Her interests include ABO sequencing and teaching MLS and SBB students in complex antibody identifications.