A member asked:

How can i get a normal range of prothrombin time?

A doctor has provided 1 answer

12 Seconds, but INR: Normal prothrombin time varies a from lab to lab; the average value is about 12 seconds. To compensate for the variability, the ratio of each lab's normal to the patient value is reported as international normalized ratio (inr) and an INR of 1.0 is normal.

Answered 2/13/2015

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What does a prothrombin time measurement do?

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What is the definition or description of: prothrombin time?

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