Hi, I m on Coumadin, I just want yesterday had my Coumadin level checked it was 4.1, it s supposed to be in between 2-3. the past 4 weeks it has been staying at 4.1, I have not changed nothing about what I eat or anything like that, My nurse lowered my Coumadin twice and it still won t go back down between 2-3 like it should be WHY IS THAT???