What is a Prothrombin time (PT) Test? Why is the test done? Everything around this, that you should know, in this post, and of course our doctors are always there to help you. Just fill in your details in the form below and we will answer all your questions for FREE!
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What is prothrombin?
Prothrombin is a vitamin K-dependent glycoprotein produced by the liver needed for fibrin clot formation.
What is the prothrombin time (PT) test?
Prothrombin time measures the amount of time taken in seconds for clot formation.
What is the normal value of prothrombin time?
- Normal: 11-13 seconds
- Full anticoagulant therapy : > 1.5-2 times control value
- Critical value: >20 seconds
Why is the prothrombin time (PT) test done?
- This test is usually done in patients who are taking any blood-thinning medicines or warfarin) regularly to check if they are taking the dosage in the right way.
- The test is usually done if someone is scheduled for surgery it helps make sure blood is clotting normally to avoid complications during the procedure.
- Some people may need this test if they have bleeding or clotting disorder symptoms
Symptoms may include:
- Unexplained heavy bleeding
- The heavy menstrual period in women
- Leg pains or tenderness
- Redness or red streaks on the legs
- Rapid heartbeat.
What does high prothrombin time indicate?
It means that blood is clotting too slowly, which can be due to the following:
- Vitamin K deficiency
- Taking blood thinners regularly
- Low amount of protein that helps in clot formation
- Liver problem
What does low prothrombin time indicate?
It means that blood is clotting too quickly, which can be caused by:
- High intake of Vitamin K or Vitamin K supplements
- Hormonal therapy like birth control pills and oestrogen-containing medications.
Prothrombin time (PT) Test
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** The text on this website is sourced from websites like emedicine and/or other verified material by government agencies around the globe along with valuable inputs and additions by our team. The content of this page is proofread and updated by the team of doctors, every once in a while, to provide the most accurate information.
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