What blood type is a person if their plasma contains ONLY anti-A agglutinin?
A)A
B)B
C)O
D)AB
E)Not enough information is provided to answer question.

Question

Quizplus · Accepted Answer

If a person's plasma contains only anti-A agglutinin, it means their blood reacts against type A antigens. Therefore, they cannot have type A or AB blood. Since they have antibodies against A, they must have type B blood, which naturally contains anti-A antibodies. Blood type O would have both anti-A and anti-B antibodies, not just anti-A.

What Blood Type Is a Person If Their Plasma Contains