How is repeat ABO typing performed in the workup of transfusion reactions?

Updated: Jan 02, 2019
  • Author: S Gerald Sandler, MD, FACP, FCAP; Chief Editor: Emmanuel C Besa, MD  more...
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Answer

Repeat ABO typing of the donor's unit should be performed, using a sample from the blood container's segmented tubing. Repeat ABO typing of the recipient is done using a blood sample collected after the transfusion reaction. A discrepancy between the original ABO type and the repeat ABO typings should raise the urgent question of whether a mix-up of blood samples could place another patient at risk of a similar mismatched transfusion.


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