Ungraded Practice Question
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
|anti-A||anti-B||A1 cells||B cells||anti-D|
|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