A patient was tested positive for HLA antibody in platelet refractory panel. We were recommended to transfuse irradiated crossmatched platelet units. Irradiated to prevent graft vs host reaction. But we were informed that transfusion of leuko-reduced pRBC did not have to irradiated unless doctor specified. Can anyone explain the logic? Reference lab screened 9 units of platelets to find 1 compatible unit.