A prothrombin time (PT or PT/INR) test measures how quickly your blood clots. The results may be in seconds or, more commonly, a calculation called the International Normalized Ratio (INR).

Dec 3, 2024 · Prothrombin time test results can be presented in two ways. The average time range for blood to clot is about 10 to 13 seconds. A number above that range means it takes blood longer than …

Oct 22, 2025 · Studies confirm that PT and INR reference intervals can vary with age and sex, with some populations showing slightly higher PT/INR reference intervals in females and older adults.

A normal PT-INR range for people who take warfarin is 2-3 but can vary from patient to patient. Patients who tend to clot more easily may have an INR target range of 3-4.

Mar 16, 2023 · INR levels are a measure of how long it takes for a person's blood to clot. Understand your normal range and what high INR levels can mean for your health.

Your INR number should be between 2 and 3 if you are taking a blood thinner, but it could be different, depending on your condition. For instance, your INR goal if you are being treated for a mechanical …

Aug 21, 2025 · Decipher normal INR levels and target ranges. Understand how to monitor and maintain your blood clotting for better health.

Jul 23, 2025 · The Prothrombin time in seconds is reported along with the corresponding International Normalized Ratio (INR).

PT ot. Normal range for a healthy person is 0.8 - 1.3 and for people on warfarin therapy, 2.0-3.0, although the target INR may be higher in particular situations, such as for those with a mechanical …

PT INR normal range explained with details on prothrombin time levels. Learn how these values affect blood clotting and overall health.