Blood Groups and Significance · NCERT Biology

During a blood transfusion, what is the most critical factor to check to prevent 'clumping' (agglutination) of RBCs?

  1. Total count of white blood cells present in the donor's sample
  2. Compatibility of antigens and antibodies
  3. Hemoglobin concentration and oxygen-carrying capacity of the recipient
  4. Total plasma volume available from the donor
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Correct answer: Compatibility of antigens and antibodies

Transfusion compatibility depends on matching the donor's antigens with the recipient's antibodies. If incompatible, the antibodies will attack the donor RBCs, causing them to clump together and lyse.

Difficulty: Medium Question 11 of 20

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