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