Continuing education episode! Transfusion-associated Graft-versus-Host Disease (TA-GVHD) is a notoriously deadly but thankfully rare transfusion complication. Blood banks have used irradiation of cellular blood products for decades to prevent TA-GVHD, but clinicians and laboratorians still sometimes misunderstand what irradiation does and does not do. Dr. Chris Tormey, co-author of a 2018 article in Archives of Pathology and Laboratory Medicine on this topic, is my guest on today's interview. Dr. Tormey details the past, present, and future of blood product irradiation in this practical and timely interview.