MICROANATOMY

Detailed explanation-1: -A prothrombin time (PT) test measures how long it takes for a clot to form in a blood sample. An INR (international normalized ratio) is a type of calculation based on PT test results. Prothrombin is a protein made by the liver. It is one of several substances known as clotting (coagulation) factors.

Detailed explanation-2: -The prothrombin time, sometimes referred to as PT or pro time, test is a test to evaluate blood clotting. Prothrombin is a protein produced by your liver. It is one of many factors in your blood that help it to clot appropriately.

Detailed explanation-3: -These tests include a prothrombin time test and INR (PT/INR) and/or a partial thromboplastin time test (PTT). A family health history of problems with clotting factors. Some conditions that affect clotting factors, such hemophilia, are inherited. That means that your parents passed the gene for the disease to you.

Detailed explanation-4: -A prolonged PT means that the blood is taking too long to form a clot. This may be caused by conditions such as liver disease, vitamin K deficiency, or a coagulation factor deficiency (e.g., factor VII deficiency). The PT result is often interpreted with that of the PTT in determining what condition may be present.