Multiple choice

Which blood group is known as the 'universal donor'?

  1. O

  2. AB

  3. A

  4. B
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Blood group O (specifically O negative) is called the universal donor because it lacks A and B antigens on red blood cells, allowing it to be transfused to recipients of any blood group in emergencies. AB positive is the universal recipient, while A and B can only donate to their own types and AB.

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