Ureteral stones but CT shows negative, you can choose intravenous urography, ultrasound and other complementary and other tests, and you need to consider the possibility that the stone has been discharged. Generally speaking, CT has high sensitivity for stones and can detect stones that cannot be shown by ultrasound, urography, intravenous urography and retrograde urography. If CT for ureteral stones shows negative, you can choose enhanced CT, endoscopy and other tests, while considering the absence of ureteral stones or stones have fallen out or other causes. For urinary stones, urinary ultrasound or urography is the preferred test and can detect most stones. In summary, seek medical attention for any discomfort.