A 42-year-old member asked:
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what happens if your normal prothrombin level is 2-3, what happens when it is 11 or higher?

1 doctor answer
Dr. Richard Orr
43 years experience Surgical Oncology
You may be confused: INR is a measure of blood clotting and is often kept at about 2 if you are on warfarin. An INR of 11 would be EXTREMELY dangerous and put you at very high risk of bleeding On the other hand, prothrombin levels measure a specific clotting factor and may have normal values (not on anticoagulants) near 11 depending on a particular lab.
Answered on May 5, 2015

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Related questions:

A 34-year-old member asked:
Dr. James Blachly
Specializes in Hematology and Oncology
PT or INR?: The normal prothrombin time is closer to 10 seconds. You may be confusing the INR, although an INR is normally 1.0 ; if you take certain types of bloo ... Read More
A 23-year-old member asked:
Dr. Gurmukh Singh
48 years experience Pathology
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 n ... Read More
A 42-year-old member asked:
Dr. Gurmukh Singh
48 years experience Pathology
Yes.: Prothrombin times about three times higher than normal for the particular lab may be a risk for abnormal bleeding.
A 39-year-old member asked:
Dr. Joseph Woods
27 years experience Pathology
Can mean Vit K low.: If prothrombin time blood test is high, without other high levels, it can mean a vitamin k deficiency or warfarin use. Vitamin k helps in the functio ... Read More
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