12/01/2026
We’re often asked why fasting is important before an abdominal ultrasound. Here’s a simple breakdown
Clearer Images
Eating causes the stomach and bowel to fill with food and gas, which can block sound waves and make organs harder to see.
Gallbladder Assessment
Fasting keeps the gallbladder full. After eating, it contracts, which can hide gallstones or other issues.
What does fasting usually mean?
Typically no food, milk, chewing gum or smoking for 6–8 hours before your appointment. These appointments are usually done in the morning to make the fast more easy for the patient. Small sips of water are fine, and you can continue to take regular medication.