A PT (prothrombin time) test is used to determine and diagnose clotting issues. An INR (international normalized ratio) is a standardized number that is calculated based on PT test results and is used to monitor patients being treated with blood-thinning medication. When it comes to your overall well-being, maintaining a healthy heart is essential. With Lincare's home INR testing, you have your PT/INR values at your fingertips. Patient self-testing with mdINR® reduces the risk of bleeding and clotting by giving you reliable, real-time results from the comfort of home. These tests save you from a visit to the physician's office or lab to check your PT/INR levels.