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What does it mean when my prothrombin time blood test is high, compared to normal or low?

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Dr. Joseph Woods
Pathology

In brief: 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 function and viability of factors ii, vii, ix, and x and these affect prothrombin time. If there are other levels altered, it could be a factor v, or x deficiency, disseminated intravascular coagulation (dic), or liver failure. See your doctor to be sure.

In brief: 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 function and viability of factors ii, vii, ix, and x and these affect prothrombin time. If there are other levels altered, it could be a factor v, or x deficiency, disseminated intravascular coagulation (dic), or liver failure. See your doctor to be sure.
Dr. Joseph Woods
Dr. Joseph Woods
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