National Dental Examining Board of Canada (NDEB) Practice Exam

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In a Factor VIII hemophiliac, which laboratory finding is typical?

  1. Prolonged clotting time

  2. Decreased white blood cell count

  3. Increased platelet count

  4. Shortened bleeding time

The correct answer is: Prolonged clotting time

In a Factor VIII hemophiliac, the clotting time is typically prolonged because their body lacks the necessary protein to form blood clots. Option B is incorrect because hemophiliacs do not have any abnormalities with their white blood cell count. Option C is incorrect because hemophiliacs have normal platelet counts. Option D is incorrect because bleeding time is not affected by Factor VIII deficiency.

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