Does gallbladder sludge show up on ultrasound? Yes it does. Gallbladder sludge shows clearly on an abdominal ultrasound scan. You Might Also Like What can an abdominal ultrasound Detect? 25/01/2022 Is it easy to book an abdominal ultrasound appointment? 25/01/2022 Can you see cirrhosis on an ultrasound? 25/01/2022