Question: what do coumadin numbers mean?
Answer: It measures how long it takes your blood to clot. The longer your blood takes to clot, the higher the INR. Most people taking anticoagulants have a ratio of between 2 and 3.5. This means their blood takes 2 to 3.5 times longer to clot than usual. The dose of warfarin you need depends on your blood test result.