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The page below is a sample from the LabCE course Blood Banking Question Bank - Review Mode (no CE). Access the complete course and earn ASCLS P.A.C.E.-approved continuing education credits by subscribing online.

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The most definite indication that a patient has been sensitized to a specific red cell antigen is:

Please select the single best answer

	Hives and rash
	A positive posttransfusion DAT in a patient with a previously negative DAT
	A positive posttransfusion DAT in a patient with a previously positive DAT
	Hemoglobinuria