Moderate

Which of the following coagulation factors is deficient in classical hemophilia ?

Correct answer: A. VIII

  • A. VIII
  • B. IX
  • C. X
  • D. XII

Explanation

Classical haemophilia, or haemophilia A, results from deficiency of factor VIII and produces a prolonged intrinsic-pathway clotting time. Factor IX deficiency causes haemophilia B.

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