Which blood group transfusion can be made without risk?
Correct answer: D. Group B to Group AB
- A. Group A to Group B
- B. Group AB to Group O
- C. Group A to Group O
- D. Group B to Group AB
Explanation
Blood transfusions must be compatible, meaning donor blood antigens should not react with recipient blood antibodies. Group AB individuals are universal recipients because they lack antibodies against A and B antigens. Therefore, Group B blood can be safely transfused to Group AB recipients. In contrast, Group A to Group B, Group AB to Group O, and Group A to Group O transfusions all involve antigen-antibody reactions that cause incompatibility and risk.
This question appeared on the ETEA MDCAT 2012 paper, which you can sit online with every answer explained.
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