Can I drink Water before an Abdominal Ultrasound? If you are having an abdominal scan, you are allowed to have clear fluids such as water and black coffee. You Might Also Like Does gallbladder sludge show up on ultrasound? 25/01/2022 What happens after the examination? 25/01/2022 Can you see cirrhosis on an ultrasound? 25/01/2022