What is PT?
Prothrombin time, referred to as PT, is a set of methods to detect the external coagulation pathway.
Since the current test standard is based on the International Normalized Ratio (INR for short), this test is also called "ProTime INR" or "PT/INR". This method can assess individual blood clotting ability, warfarin dose monitoring, liver function, and vitamin K level.
PT can detect the function of the first, second, fifth, seventh and tenth coagulation factor.
PT and partial prothrombin time (aPTT) can be tested together to detect whether the subject’s internal coagulation pathway and common coagulation pathway are normal.
Before the operation, the doctor may order a blood test to determine how fast your blood is clotting. This set of tests is called a coagulation study. These tests alone are commonly referred to as PT (Prothrombin Time), PTT (Partial Thromboplastin Time) and INR (International Normalized Ratio).
In some surgical procedures, it is important that the blood does not clot as quickly as normal, and agents may be administered to slow the clotting time.
