Question

Blood of AB group cannot be given to B group patient because

• A. Patient has antibodies B
• B. Patient lacks antibodies B
• C. Patient lacks antibodies A
• D. Patient has antibodies A

Answer 1

Answer: (D)

Patient has antibodies A

Blood group AB indicates the presence of antigen A and antigen B on the plasma membrane of RBC with no antibodies in the plasma. Blood group B has antigen B on the plasma membrane with antibodies for A in the plasma. Therefore, if a B blood group patient receives blood from AB blood group it will result in clumping of the RBCs due to antigen-antibody reaction.

So, the correct answer is 'Patient has antibodies A'