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These ABO, Rh, and antibody screen results were obtained by the transfusion services laboratory using the blood specimen that was collected prior to starting the emergency transfusion with O Rh-negative Red Blood Cells.

ABO and Rh typing

Forward Group
Reverse Group
anti-Aanti-BA1 cellsB cellsanti-D

Antibody screen

Cells Gel
Screen cells
Screen Cell I 3+
Screen Cell II 2+
Screen Cell III 2+

* IAT = indirect antiglobulin test

What is the patient's ABO group?

Please select the single best answer