PT INR (Prothrombin Time with INR)

Blood clotting is a complex physiological process that involves various blood components and coagulation factors. It is vital for preventing excessive bleeding and maintaining overall health. Prothrombin is a protein and type of clotting (coagulation) factor the liver makes. A PT INR (Prothrombin Time with INR) test helps measure how long it takes for blood to clot. The International Normalized Ratio (INR) is a standardized method used to interpret test results consistently.

The PT INR (Prothrombin Time with INR) test can be done if you have symptoms of bleeding or clotting disorders, such as unexplained heavy bleeding, easy bruising, unusual heavy nose bleeds, leg swelling, redness on the legs, or chest pain. It also helps monitor and adjust medication dosages in patients taking anticoagulant medications, such as warfarin. PT/INR test is also vital in diagnosing conditions such as hemophilia, liver disease, and vitamin K deficiency, which can impair the blood's ability to clot blood.

Usually, overnight fasting (8-12 hours) is preferred before a PT INR (Prothrombin Time with INR) test, and a duly filled coagulation requisition form is mandatory for sample collection.

Test result ranges are approximate and may differ slightly between labs depending on the methodology and laboratory guidelines. Talk to your doctor about your specific test results. Narrate your complete medical history to help the doctor correlate your clinical and laboratory findings. The test results will help the doctor prevent, manage, and treat coagulation-related health issues.