A boy complains of bleeding gums, swollen, joints with hemorrhage into joints His paternal and maternal uncle complains of same problem It is due to deficiency of factor________________?

Correct answer: A. VIII

A. VIII
B. IX
C. X
D. VI

Explanation

The recurrent hemarthrosis and family history indicate haemophilia A, an X-linked deficiency of factor VIII. Factor IX deficiency produces haemophilia B, which has a similar clinical pattern but a different genetic defect.

Submitted by a TestUstad contributor and published by the TestUstad editorial teamLast updated 18 September 2026

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