I could use some advice. I've been on coumadin for 5 years now and have never had blood in my urine with a high INR. This week I had bright red urine so I tested my INR (4.6) and then visited my primary care doctor. The PC doc called the coumadin clinic and they told her that they would instruct me to skip a couple days of coumadin and the bleeding should stop. Well, after 3 days the bleeding did stop and my INR is now too low. Should I be concerned that they're just going to assume that it was the coumadin and not do any further tests? This was bright red urine for 3 days which has never happened before with high INR levels. Is it always just the coumadin? Have you all had blood in the urine from coumadin?