Re: What INR is normal for a healthy person?
A normal person should have an INR of 1, if I understand how it works correctly.
For clots, people on blood thinners usually are on a range of 2.0-3.0, with a target of 2.5.
For mechanical heart valves, I think the range is 2.5-3.5 with a target of 3.0.
It can go anywhere from 2.0-4.0.
Going much higher than that can get dangerous, as it can lead to bleeding complications internally. I don't think a person would typically have an INR lower than 1, unless they were packing down the vitamin K.