Which laboratory finding supports a diagnosis of acute hemolytic transfusion reaction?
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Correct answer: Positive direct Coombs test
A positive direct Coombs (direct antiglobulin) test indicates antibodies bound to red blood cells. This supports immune-mediated hemolysis. Other findings include elevated LDH and decreased haptoglobin.
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More Blood Transfusion Reactions questions
- Transfusion-associated circulatory overload (TACO) is primarily due to:
- Which transfusion reaction is most associated with hypotension and bronchospasm in IgA-deficient patients?
- Which blood component modification reduces febrile non-hemolytic reactions?
- Iron overload due to repeated transfusions primarily affects which organ?
- Which transfusion reaction is most commonly caused by bacterial contamination of stored blood?
- Which finding distinguishes TRALI from TACO?