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Doctor insights on: Correlation Of Prothrombin Time With Clotting Time

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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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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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B12 inj(500mcg) for a week, does it increase clotting time,bleeding time?does it affect prothrombin time & INR? what supplements needed on B12 therapy

B12 inj(500mcg) for a week, does it increase clotting time,bleeding time?does it affect prothrombin time & INR? what supplements needed on B12 therapy

B12: B12 itself will not influence clotting or bleeding. However, as anemia corrects, blood clotting improves. Platelet count can raise as B12 improves marrow. Take folic acid, other B vitamins, and get potassium from food. ...Read more

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What is the definition or description of: prothrombin time?

What is the definition or description of: prothrombin time?

PTT: Prothrombin time provides information regarding the extrinsic pathway involved in clot formation. It's commonly used to monitor warfarin therapy. ...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 is thrombocytopenia and how is a prothrombin time test used?

What is thrombocytopenia and how is a prothrombin time test used?

Blood clotting: Thrombocytopenia means low level of blood plateletes. Prothrombin time is a test for extrinsic coagulation pathway that is initiated with factor vii. Vitamin k deficiency or use of Coumadin (warfarin) or liver function deficiency will prolong the prothrombin time, while several blood clotting diseases that affect intrinsic coagulation such as von willibrand or hemophila will not affect prothrombin time. ...Read more

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My prothrombin time is 15.7. Will that be a problem if I have major surgery?

My prothrombin time is 15.7. Will that be a problem if I have major surgery?

Prothrombin time: An elevation in the Prothrombin time should be evaluated before you have surgery. There are many possible causes for this and it could pose a risk for you during surgery. ...Read more

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What types of drugs an foods interfere with the coagulation test of prothrombin time?

What types of drugs an foods interfere with the coagulation test of prothrombin time?

Depends on : Circumstances. In a normal person, usual drugs and foods do not affect pt measurably. In patients on warfarin, foods both prolong pt, e.g., grapefruit, or shorten it, e.g., green leafy vegetables. Many drugs affect pt, e.g., birth control pills, isoniazid, anti-fungals, antibiotics, and many other drugs metabolized through cytochrome p450 system, and barbiturates and alcohol. ...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