Explain what are PT and PTT.

Question:

Explain what are PT and PTT.

Blood clotting:

Blood clotting is a process in which the coagulation or aggregation of blood platelets occurs at the site of injury or accumulation of these platelets in the blood vessels. Blood clotting is necessary for preventing the bleeding, and it also prevents the flow of blood in the blood vessels.

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The prothrombin time or PT can be defined as a type of blood test which measures the time taken by the blood to clot. It can be used to test the...

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What is Prothrombin Time? - Definition & Normal Range

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Chapter 20 / Lesson 7
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Prothrombin Time (PT) is the measurement of the time blood takes to coagulate to a thrombus (blood clot). Learn the procedure and normal range of PT, as well as the composition of blood itself that contributes to the difference in these measurements.


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