<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hi there! I have a lower back pain and pulling in my bladder. I believe its a UTI but no results yet just a dipstick test leukocyte 2. Have a UTI almost every month for 15 months no UTI in the culture only blood or leukocytes actually... Having an MRI with contrast for abdomen scheduled tomorrow. My question is: is it dangerous to have a contrast if i don t know about my kidney health constant infections? My doctors don t make much out of these infections, ultrasounds always come back normal as well... Thank you!  <response>: Dear patient Recurrent UTI may affect your kidney and may lead to glomerulonephritis. Sensitivity of ultrasound depends on experience and may not pick up renal pathology. Before going for contrast your serum urea and creatinine must be done and allergy to contrast dye must be ruled out. If serum urea and creatinine are normal then there is no harm In doing contrast MRI. Take opinion from urologist before going for contrast MRI with serum urea and creatinine report. 