2 doctors weighed in:
How can I get a normal range of prothrombin time?
2 doctors weighed in

Dr. Gurmukh Singh
Pathology
1 doctor agrees
In brief: 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.

In brief: 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.
Dr. Gurmukh Singh
Dr. Gurmukh Singh
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