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Doctor insights on: Prothrombin Fragment 1 2

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When would a baby of 1-2 months need prothrombin time testing? What are they looking for?

When would a baby of 1-2 months need prothrombin time testing? What are they looking for?

Unexplaind bruises: When a doctor orders prothrombin time and other clotting tests, he/she is probably looking for a bleeding disorder that may explain bruises in a baby that young. ...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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Can i tell me if my normal prothrombin level is 2-3, what happens when it is 11 or higher?

Can i tell me if my normal prothrombin level is 2-3, what happens when it is 11 or higher?

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 blood thinners it could be 2-3. So, if you are asking what happens if your INR is >= 11: You could bleed to death. It is nothing to fool around with. ...Read more

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What happens if your normal prothrombin level is 2-3, what happens when it is 11 or higher?

What happens if your normal prothrombin level is 2-3, what happens when it is 11 or higher?

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. ...Read more

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What is prothrombin?

What is prothrombin?

Clotting factor: When activated, prothrombin becomes thrombin, which among other effects turns fibrinogen into the stick for fibrin to create a molecular meshwork that will become the basis for the scab. Protrombin time is a conventional name for one assay of the ability of the clotting factors (not platelets) to keep blood in the vessels. ...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

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Decrease in prothrombin time can lead to what?

Decrease in prothrombin time can lead to what?

Repeat test.: A shortened clotting time that does not appear to reflect technical error has been associated with an increased risk of thrombosis, recurrent thrombosis, recurrent miscarriage, or bleeding, and may increase the risk of thrombosis associated with other common thrombotic risk factors (eg, factor v leiden, obesity, increased levels of d-dimer). ...Read more

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How can I get a normal range of prothrombin time?

How can I get  a normal range of prothrombin time?

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 normal to the patient value is reported as international normalized ratio (inr) and an inr of 1.0 is normal. ...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