Hi My INR was only 1.6 this week! It's been 4 months and doesn't seem to come up? Does that mean my blood is very thick or is there another reason! My doc sez boy r you hard to regulate! Why am I so difficult??? Thx for any input! Also my local Hemo says the parameters have changed as far as what level of warfarin I shud be at! He said they use to think so! But now they changed it! Has anyone heard that???