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What is the prothrombin time in a blood test?
2 doctors weighed in

Dr. Joseph Woods
Pathology
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In brief: Measures clot factor
This is a test that measures clotting factor activity.
All these factors are synthesized in the liver, except factor viii, so this is also a check on the capability of the liver as well. If this is high, it can be from a deficiency or incabability of the factors or a liver failure issue, like cirrhosis, or a vitamin k deficiency from fat malabsorption. This shoud be worked-up dr.'s office.

In brief: Measures clot factor
This is a test that measures clotting factor activity.
All these factors are synthesized in the liver, except factor viii, so this is also a check on the capability of the liver as well. If this is high, it can be from a deficiency or incabability of the factors or a liver failure issue, like cirrhosis, or a vitamin k deficiency from fat malabsorption. This shoud be worked-up dr.'s office.
Dr. Joseph Woods
Dr. Joseph Woods
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