An abdominal ultrasound is one of the most common imaging exams doctors order, and it is also one of the few that depends on how you prepare. Arrive with a full stomach and the images can be blurred by gas; skip a step and you may need to come back. This guide explains exactly how to prepare for an abdominal ultrasound in Miami, what happens during the scan and what comes next.
What Is an Abdominal Ultrasound?
An abdominal ultrasound uses high-frequency sound waves to create real-time images of the organs in your upper abdomen. It is painless, uses no radiation and usually takes 30 to 45 minutes. A complete study typically looks at:
- The liver, including signs of fatty liver or masses
- The gallbladder and bile ducts, including gallstones
- The pancreas
- The spleen
- Both kidneys
- The abdominal aorta, the body’s largest artery
Doctors order it to investigate abdominal pain, bloating, abnormal liver blood tests, suspected gallstones, an enlarged organ or a finding seen on another test.
How to Prepare: Fasting Is the Key Step
For most adults, the main instruction is simple: do not eat or drink for 8 hours before your exam. Morning appointments make this easy, because the fasting happens overnight.
Why fasting matters
- Eating causes the gallbladder to contract and empty, which makes it hard to see stones or wall thickening.
- Food and drinks create gas in the bowel. Sound waves do not travel well through gas, so organs behind it are hidden.
- The pancreas sits deep behind the stomach and is often only visible when the stomach is empty.
What you can and cannot do
- Small sips of water to take essential medications are usually fine.
- Take your regular medications unless your doctor tells you otherwise.
- Avoid chewing gum and smoking before the exam; both make you swallow air.
- If you have diabetes, talk to your doctor about timing your medication and meals; an early-morning appointment is usually best.
Some exams have different instructions. A renal (kidney and bladder) ultrasound often requires a full bladder instead of fasting, and an abdominal aorta ultrasound also requires fasting. Our exam preparation guide lists instructions for every exam we perform.
What to Bring
- Your physician’s written order (prescription) for the exam
- A photo ID
- A list of your current medications
- Any prior imaging reports related to the same problem
What Happens During the Scan
You will lie on an exam table, usually on your back. The sonographer applies a warm, water-based gel to your abdomen and moves a small handheld transducer over the skin. You may be asked to take a deep breath and hold it, or to roll onto your side, so organs move out from behind the ribs and bowel. You may feel light pressure, but the exam should not hurt. Afterward, you wipe off the gel and can eat, drink and return to normal activities right away.
Getting Your Results
Every study at Imaging Nation Diagnostics is interpreted by a board-certified radiologist. Ultrasound reports are sent to your ordering physician within 48 business hours, and your doctor will review the findings with you.
Abdominal Ultrasound Without Insurance
We welcome self-pay patients and keep pricing straightforward. Read our guide to getting an ultrasound without insurance in Miami, or contact our team for self-pay pricing and other payment questions.
Frequently Asked Questions
Can I drink water before an abdominal ultrasound?
Small sips of water to take essential medications are usually fine. Otherwise, avoid eating and drinking for 8 hours before your exam unless your doctor gives you different instructions.
Can I drink coffee before an abdominal ultrasound?
No. Coffee, even black, can stimulate the gallbladder and add gas to the bowel. Wait until after your exam.
How long does an abdominal ultrasound take?
Most abdominal ultrasounds take 30 to 45 minutes. Plan a little extra time for check-in.
Do I need a doctor’s order for an abdominal ultrasound?
Yes. Please bring a written order from your physician to your appointment.
Schedule Your Abdominal Ultrasound in Miami
Imaging Nation Diagnostics performs abdominal ultrasounds Monday through Friday with experienced sonographers and board-certified radiologists. Book your appointment online or call 786-353-9160. Learn more about all of our ultrasound services.
