The Red Pee
A 55-year-old man with B-cell lymphoma and history of a warm autoantibody and a cold autoanti-I antibody reactive at 4 °C but no alloantibodies is admitted to the hospital for workup of fever of unknown origin. The patient has received red blood cell (RBC) and platelet transfusions in the hospital in the past but none in the prior 3 months. An ethylenediaminetetraacetic acid (EDTA) anticoagulant sample is submitted to the blood bank for type and screen along with a request for crossmatch of one irradiated RBC unit; the patient’s hemoglobin (Hgb) is noted to be 7.0 g/dL at the time of the request.
KeywordsBlood warmer Cold autoimmune hemolytic anemia Hypotonic solution Hypertonic solution Mechanical hemolysis Non-immune acute hemolysis Osmotic hemolysis Thermal hemolysis
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