Refer to the antigram below to answer the question. RB is a 65-year-old Caucasian male with group O Rh(D)-negative phenotype. Upon review, there is a prior history of transfusion ten years ago. The pretransfusion 2-cell screen was negative using LISS. Group O Rh(D)-negative units were compatible when crossmatched at immediate spin and were released. RB was transfused with two units of RBCs during hip-replacement surgery. One day following surgery, a delayed transfusion reaction was suspected because of a drop in hemoglobin. A transfusion reaction workup was requested. The pre- and post-samples were compared visually for hemolysis. The DAT on the post-reaction sample was microscopic positive. The posttransfusion antibody screen was 2+ positive with one of the screening cells (using LISS) at AHG. An antibody identification panel was performed. What is the most likely antibody? (Tip: Do not get lost in the case history. Focus on solving the antigram. You got this!)
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You are drawing blood in a trauma situation. It is very bus…
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Anti-K was identified as the most likely antibody in the fol…
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