A woman with high-risk MDS underwent peripheral blood stem cell transplantation from an unrelated male donor with a 9/10 HLA-antigen match. On day +32 after the transplant (a Friday), she was transferred to a local hospital. The discharge letter was faxed to hematology secretarial office. The following day, her hemoglobin was 8.0 g/dl, platelet count 85 × 109/l, and neutrophils 4.1 × 109/l. Two units of leucodepleted red cells were selected for transfusion to the patient. First unit was transfused uneventfully; transfusion was stopped halfway through the second unit, after the intervention of the duty consultant who realized that the units had not been irradiated.