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Doctor insights on: Partial Prothrombin Time Vs Prothrombin Time

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What is the difference between pt protrombim time and partial thromboplastin time?

What is the difference between pt protrombim time and partial thromboplastin time?

Different clotting: Factors. Prothrombin time, pt measures extrinsic pathway including factors vii, and tissue factor. Partial thromboplastin time, ptt, measures instrinsic pathway including factors xii, xi, ix and viii. Factores v and x, and prothrombin are common to both. ...Read more

Dr. Shimae Fitzgibbons
211 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 difference between pt (protrombim time) and ptt (partial thromboplastin time)?

What is the difference between pt (protrombim time) and ptt (partial thromboplastin time)?

Two pathways: The process of coagulation follows two pathways, and pt measures the constituents of the extrinsic pathway and PTT measure the constituents of intrinsic pathway. There is a common final pathway for both sides. The tests help in diagnosing the type of coagulation abnormality, e.g., pt is prolonged on treatment with coumadin/warfarin and PTT is prolonged with heparin. ...Read more

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What is the difference between pt and ptt partial thromboplastin time?

What is the difference between pt and ptt partial thromboplastin time?

Two pathways: The process of coagulation follows two pathways, and pt measures the constituents of the extrinsic pathway and PTT measure the constituents of intrinsic pathway. There is a common final pathway for both sides. The tests help in diagnosing the type of coagulation abnormality, e.g., pt is prolonged on treatment with coumadin/warfarin and PTT is prolonged with heparin. ...Read more

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What is a partial thromboplastin time blood test?

What is a partial thromboplastin time blood test?

Intrinsic pathway of: Clotting. The process of coagulation follows two pathways, and pt measures the constituents of the extrinsic pathway and PTT measure the constituents of intrinsic pathway. There is a common final pathway for both sides. The tests help in diagnosing the type of coagulation abnormality, e.g., pt is prolonged on treatment with coumadin/warfarin and PTT is prolonged with heparin. ...Read more

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What does an elavated partial thrombin time mean?

Coagulation test: Ptt measures intrinsic pathway of coagulation and will be prolonged if one or more of the factors are low. However, the common reason for prolonged PTT is heparin. ...Read more

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Pt/inr normal, ptt, activated is 3 seconds prolonged, and in the lupus anticoagulant panel, only abnormality is aptt at 41.4 sec. What does this mean?

Pt/inr normal, ptt, activated is 3 seconds prolonged, and in the lupus anticoagulant panel, only abnormality is aptt at 41.4 sec. What does this mean?

Any symptoms?: Why were these tests done? Do you have any symptoms? All laboratory results need to be interpreted in the clinical context and the doctor who ordered the tests is usually in the best position to do that. A slightly prolonged PTT in isolation is not a cause for concern, but it would be important to know why your doctor ordered the tests. Lupus is one of the causes of prolonged ptt. ...Read more

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What is the typical recovery time for a rt leg meniscal repair (partial meniscectomy) and MCL reconstruction. How long in 0 brace & how long to drive?

What is the typical recovery time for a rt leg meniscal repair (partial meniscectomy) and MCL reconstruction. How long in 0 brace & how long to drive?

Varies: When a ligament is reconstructed, the rehab time is longer because the repair needs to be protected. Rehab time depends on your age and level of fitness prior to surgery, and also on your surgeon and the type of reconstruction. I would say no driving for at least 6 weeks. Early rom in a brace is generally encouraged. ...Read more

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Why bleeding time is smaller than clotting time ?

Why bleeding time is smaller than clotting time ?

Bleeding & Clotting : The tests measure different aspects of your blood homeostatic system. The bleeding time measures the ability to form a platelet plug, which is usually fast. No clot has formed yet. The clotting times measure different "arms" of your clotting cascade - times to actually form a clot, and that takes longer than the primary platelet plug i referred to previously. ...Read more

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How much time is a patient on plavix (clopidogrel) after stent placement?

How much time is a patient on plavix (clopidogrel) after stent placement?

Depends: Current recommendations: Bare metal stent-at least 6-8 weeks. Drug eluting stent - at least one year. In-stent restenosis-maybe for life. The optimal duration of treatment for drug eluting stents is not known and is an area of active research. ...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 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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What is the normal recovery time for a partial knee replacement?

What is the normal recovery time for a partial knee replacement?

1-2 months: Full function and range of motion can be restored as soon as 2 weeks, but full strength may take more than 2 months. ...Read more

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How long does it take to become concious after coronary bypass graft surgery(the surgery duration was 6 hours.Please give a range of time)?

How long does it take to become concious after coronary bypass graft surgery(the surgery duration was 6 hours.Please give a range of time)?

It varies: It all depends how was the patient going into the surgery and how the surgery went. Usually if a healthy patient undergoes CABG surgery, he is ECT unarmed the same day and he/she is awake alert even before he/she is extubated. ...Read more

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Thrombocytopenia affects your prothrombin time test on your lab results?

Thrombocytopenia affects your prothrombin time test on your lab results?

No. Bleeding time.: In thrombocytopenia, both prothrombin time (pt) and partial thromboplastin time (PTT) are normal. But bleeding time and platelet count are affected. Bleeding time is prolonged and the platelet count is decreased. ...Read more

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Is it normal for neonate one day age prothrompin time 45 INR 5?

Is it normal for neonate one day age prothrompin time 45  INR 5?

No: The prothrombin time (PT) measures if the levels of Factor 7, a protein involved in clotting, is adequate. In a neonate, all such proteins or factors, are decreased. The PT of 45s is rather high. There should be a pediatric hematologist who should see your newborn. If you are incorrectly referring to the Partial Prothrombin Time (PTT) being 45s, then that should be fine and will correct soon. ...Read more

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Earlier this year I had prolonged PT and aptt, w/prolonged thrombin time. Mixing study did not correct. Dr thought lupus anticoagulant.Coagulation studies this mo show only prolonged Thrombin time. Have SLE. Do coagulation studies change like that?

Earlier this year I had prolonged PT and aptt, w/prolonged thrombin time. Mixing study did not correct. Dr thought lupus anticoagulant.Coagulation studies this mo show only  prolonged Thrombin time. Have SLE. Do coagulation studies change like that?

What else changed: we also like to have two repeat positive tests to make a diagnosis. Were you on any diferent medications that might have had an effect on the tests. These results should be discussed with your rheumatologist. ...Read more

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What bleeding time in patient with hemophilia is normal?

What bleeding time in patient with hemophilia is normal?

It is normal: The test called "bleeding time" is normal in patients with hemophilia. This is because stopping bleeding from a small cut does not depend on factor 8 or factor 9 that is missing in patients with hemophilia a, or in hemophilia b respectively. Major determinating factors for bleeding are platelet numner, platelet function, and supporting connective tissue structure. ...Read more

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