I'm a Lupus/SLE patient and recently I been urinating the color of "cola or grape juice." They found blood and my urine and thought it was a kidney stone. But all the test(CAT Scan, x-rays & a camera in my bladder) my urologist put me through confirmed that it's not kidney stones. He again wants to put a camera in my bladder again to see if he missed something. He stated he needs to see which kidney is bleeding. Something doesn't sound right. To be honest, I think he has no clue. This is very frustrating. I think this has to do with the chemo(Rituxan) I did in Nov.2006. This started 1 week after my last infusion. This coloration happens about every two weeks and last about 5 days. Please, can someone help me find out what's going on.