If the autocontrol is negative and the patient has been transfused or pregnant,then positive reactions in the antibody screen test are likely due to an
A)alloantibody
B)antigen
C)autoantibody
D)anti-drug antibody

Question

Quizplus · Accepted Answer

A negative autocontrol indicates the absence of autoantibodies in the patient's serum, which means any positive reactions in the antibody screen are likely due to an alloantibody. Alloantibodies are antibodies that are produced in response to foreign antigens present on red blood cells, usually from previous transfusions or pregnancies.

If the Autocontrol Is Negative and the Patient Has Been