The ABO group of the neonate is determined only by typing red blood cells with
A)anti-A antiserum
B)anti-B antiserum
C)both anti-A and anti-B antisera
D)both anti-A and anti-O antisera

Question

Quizplus · Accepted Answer

The ABO blood group of a neonate can be determined by typing the red blood cells with both anti-A and anti-B antisera. This is because the ABO blood group system is based on the presence of A and/or B antigens on the surface of red blood cells. A neonate can have the A antigen, B antigen, both A and B antigens, or neither antigen. Typing with both antisera allows for identification of the presence or absence of the A and B antigens, thereby determining the ABO blood group. Typing with only anti-A or anti-B antisera would not provide complete information on the ABO blood group. Typing with anti-O antisera is not necessary since the presence of the O antigen is determined by the absence of both A and B antigens.

The ABO Group of the Neonate Is Determined Only by Typing