Pharmacology – MCQ 20 – Prothrombin Time of a patient.

Prothrombin Time of a patient is 26. Control PT is 13 seconds and Sensitivity index is 1.41. What will be the INR of this patient?
A. 26/3
B. (26/13) * 1.41
C. (26/13) ^ 1.41
D. (26/13) ^ (1/1.41)

Correct answer : C. (26/13) ^ 1.41

INR = (Prothrombin time / control ) ^ Sensitivity index.
(^ indicated raised to the power of)

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