Does gallbladder sludge show up on ultrasound? Yes it does. Gallbladder sludge shows clearly on an abdominal ultrasound scan. You Might Also Like What happens after the examination? 25/01/2022 Can I drink Water before an Abdominal Ultrasound? 25/01/2022 Can liver disease be detected on an abdominal ultrasound? 25/01/2022