Prothrombin time (PT) determination with subsequent calculation of PTI and INR in blood plasma on an analyzer (PTPTI-INR)
Prothrombin time with the definition of PTI and INR. – the time it takes for a blood clot to form when specific blood clotting factors enter it, which are formed after damage to body tissues. PTI is the ratio of the clotting time of the control (normal) plasma to the clotting time of the patient's plasma.
This index reflects the processes of activation of the extrinsic coagulation pathway. INR The practical application of this test is to control the amount of blood-thinning drugs taken. That is, it is necessary to select the right dose of the drug.