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 Can you see cirrhosis on an ultrasound? 25/01/2022 Does gallbladder sludge show up on ultrasound? 25/01/2022 Can you see gastritis on an ultrasound? 25/01/2022