Medical Emergencies · single question
A patient with LIVER disease needs which clotting test (relating to vitamin K-dependent factors)?
Show answer and explanation
Correct answer: A. Prothrombin time (PT/INR)
- A. Correct. The liver synthesizes vitamin K-dependent clotting factors (II, VII, IX, X); PT/INR best reflects this synthetic function and is prolonged in liver disease.
- B. Incorrect. Bleeding time assesses platelet/vascular function, not hepatic factor synthesis.
- C. Incorrect. Platelet count alone does not evaluate the coagulation factor pathway affected by the liver.
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