Question

If a sample of blood shows clumping with antiserum A but not with antiserum B then it is group

• A. A
• B. B
• C. AB
• D. O

Answer 1

The correct option is A A

The coagulation test is used to determine the blood group of the individual. The blood is tested with the antiserum to know the type of blood group. There is antigen A in the blood group. This antigen can react with the antibody a in the antiserum A. This results in the clotting of the blood. There is no antigen B which will react in the antibody b of the antiserum B.

Thus, the correct answer is option A.