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Doctor insights on: Does The Blood Test Prothrombin Time Evaluate Extrinsic Or Intrinsic Clotting

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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 is the prothrombin time in a blood test?

What is the prothrombin time in a blood test?

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. ...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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Can you check Prothrombin time and partial thromboplastin by a simple blood test?

Can you check Prothrombin time and partial thromboplastin by a simple blood test?

Yes you can: It is a simple, common blood test. Some patients who need the test frequently can have home testing machines, too. ...Read more

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What do these tests do: clotting time, bleeding time, prothrombin time?

What do these tests do: clotting time, bleeding time, prothrombin time?

Screen: These are various assays to look for problems with the platelets (especially bleeding time) and some of the clotting factors (prothrombin time, the old-fashioned clotting time). Good luck with your workup. ...Read more

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I noticed purple spot on my leg and i took blood test. My prothrombin level was 120 (normaly it must be 70-100) how can it effect on my health?

I noticed purple spot on my leg and i took blood test.  My prothrombin level was 120 (normaly it must be 70-100)  how can it effect on my health?

Not likely: Your "coumadin nurse" or whomever helps you keep range 70-100 should be consulted for advice. They will likely suggest you take 1/2 dose for one evening, as you are not very far from target range. ...Read more

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Had full blood test and now been asked to go back to doctors as blood clotting test is not normal. What could this mean? I go back tomorrow morning.

Had full blood test and now been asked to go back to doctors as blood clotting test is not normal. What could this mean? I go back tomorrow morning.

Not enough info: There are many test that are related to clotting. The most basic is the platelet level. This is most likely test done on a 22 year olds basic labs. However if you went in w a specific complaint that they ordered more specific labs for then it would be hard to say. I encourage you to try and get a good nights rest and discuss in the morning with your doctor. ...Read more

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I am on day 14 of my period after being 2 months late, 2 neg hpt and neg blood test, i'm clotting and worried...What going on?

I am on day 14 of my period after being 2 months late, 2 neg hpt and neg blood test, i'm clotting and worried...What going on?

Could be spontaneous: Miss-carriage. It is possible that you had a spontaneous loss of an early pregnancy and the products of conception have not been expelled completely. Please see your doctor to see if you need a d&c. ...Read more