A complete history and physical exam and a detailed neurologic exam may be needed to pinpoint the exact nervous system injury. Other tests show the function of the lower urinary tract and help to guide treatment. These include a cystogram, which means putting contrast material into the bladder for X-rays. Urodynamics tests measure the pressure on the bladder and urethra. In cystoscopy, the urethra and bladder are examined with a small telescope.