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Doctor insights on: What Does High Prothrombin Time Mean

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What does it mean if my prothrombin time blood test is high?

What does it mean if my prothrombin time blood test is high?

Blood clotting : Defective. Prolonged prothrombin time can be due to deficiency of a number of coagulation factors. A common cause it treatment with warfarin/coumdain. Liver disease is an other common reason for prolonged pt. Depending on the prolongation, the person may be at risk of bleeding. ...Read more

Dr. Shimae Fitzgibbons
209 doctors shared insights

Prothrombin Time (Definition)

Prothrombin time provides information regarding the extrinsic pathway involved in clot formation. It's commonly used ...Read more


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

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

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. ...Read more

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High prothrombin time levels affect bleeding?

High prothrombin time levels affect bleeding?

Yes.: Prothrombin times about three times higher than normal for the particular lab may be a risk for abnormal bleeding. ...Read more

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What does an abnormal prothrombin time test mean for you?

What does an abnormal prothrombin time test mean for you?

Abnormal clotting : An abnormal prothrombin time means that there is something wrong with your blood's ability to form clots and prevent bleeding. There are many conditions that result in such an abnormality, and you need to have your doctor figure out what the problem is based on other test findings and your symptoms. Sometimes you'll need a hematologist to consult if there is a chance of a serious bleeding problem. ...Read more

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I had an aptt of 36.5, a aptt 1:1 np of 33.3, and a prothrombin time of 13.5. All are listed under high but my doctor is not concerned? Is this ok?

Normal range?: More information is needed including the "normal range" of the tests. Why were the tests ordered? However the elevated aptt corrects with mixing with normal blood (1:1 mix) suggesting a coagulation factor deficiency. Consider repeat testing and asking for more information about cause. Your doctor may seek the opinion of a hematologist. ...Read more

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Daughter has high monocytes, eos, eos absolute, platelets and prothrombin time. What can cause this?

Daughter has high monocytes, eos, eos absolute, platelets and prothrombin time. What can cause this?

See a hematologist : There are several differentials to be considered. Only a hematologist ( a blood specialist) can guide you on the most appropriate next step to find the cause. Looking at the blood under the microscope and reviewing other blood tests as well as physical exam can narrow down the list. Often times, a bone marrow biopsy may be needed. ...Read more

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What can cause my daughter to have high monocytes, eos, eos absolute, platelets and prothrombin time?

What can cause my daughter to have high monocytes, eos, eos absolute, platelets and prothrombin time?

Check with doc: Isolated increases in monocytes and eosinophils are often normal, especially if the overall WBC is normal and the patient is not sick. There are many causes for an elevated pro time - typically taking anticoagulants (warfarin, coumadin), some bleeding problems, vit k malabsorption or poor nutrition. If more than 2 seconds above normal have it checked out. ...Read more

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Prothrombin time = 15.8 ses, does that mean i am k deficient? why does it increase? what are normal values? hvy periods, fibroid, lysteda, treatment?

Prothrombin time = 15.8 ses, does that mean i am k deficient? why does it increase? what are normal values? hvy periods, fibroid, lysteda, treatment?

INR matters more: Different labs have different standards for prothrombin times. To standardize, labs report a value called "INR." INR of 1 is normal. Elevated INR in the absence of taking warfarin/Coumadin can occur with certain abnormalities of the clotting system, vitamin K deficiency, liver disease (inability to make clotting factors), or may just be within margin of error for the lab & in need of repeating. ...Read more

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What does a prothrombin time measurement do?

Extrinsic pathway of: Clotting. Pt is dependent on levels of multiple coagulation factors, including x, ix vii, v, and ii. ...Read more