I am scheduled to have a ct abdominal scan Monday. Or I will saw lower extremity. With and without contrast. I was in to family dr. Friday as I had blood in my urine Thursday night at 11:30, the a little trace at 1:30 and again a little trace 4ish. I had a groin pain Thursday night but I had my appendix and ovary out in 2015. Had same pain beginning to mid Oct. They did test of my urine and blood work and nothing came up. My question, I have stage 3 kidney disease where my Creation run 1.7 1.5 1.2 since 2012. My kidney dr. keeps track. so, my question. I am to fast for this test, and I assume I am to drink lots of water after to get the dye out of my system. I did not get the result from the blood work nor heard from the dr. any the confirm for the test from the hospital. Be there at 7:30 a.m. I am taking my papers from kidney doctor so the attending can take a glance at it before hand.