Mixed field Seen after O Rh Positive Red Cell Transfusion

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Mixed field Seen after O Rh Positive Red Cell Transfusion

#00062164

Author: Manish Raturi, MD, MBBS; Divya Rai, MD, MBBS
Category: Laboratory Hematology
Published Date: 01/26/2019

1. During trauma setting a 24 year old male patient was given two units of O Rh positive red blood cells (RBCs). Later on patients’ blood typing he was found to be A Rh positive with “mixed field” (Mf).

2. On blood grouping patient typed “Mf” implicating that the transfused O Rh positive RBCs were not agglutinated by the anti-A monoclonal reagent that was used to type blood.

3. We could further see clumps of the patient’s A Rh positive cells along with free, un-agglutinated O Rh positive red cells in the background.

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