A liver Fibroscan is a non-invasive, specialized scan that uses sound waves to measure the stiffness of your liver. When the liver is damaged by conditions like hepatitis or fatty liver disease, it can build up scar tissue (fibrosis). Scar tissue is stiffer than healthy liver tissue.
By measuring this stiffness, your referring doctor can determine the health of your liver and see if any scarring is present. It also measures the amount of fat in your liver using a score called CAP (Controlled Attenuation Parameter).
Common Indications for a Liver Fibroscan
- Checking for liver scarring (fibrosis) from Hepatitis B or C.
- Monitoring fatty liver disease (steatotic liver disease).
- Evaluating liver health in patients with alcohol-related liver disease.
- Assessing liver damage from autoimmune hepatitis or biliary diseases.
- Monitoring your liver's response to treatments over time.
What exactly does a liver Fibroscan show?
The scan provides two main measurements. The first is a stiffness score, which tells your doctor if you have liver scarring and how advanced it is. The second is a CAP score, which shows how much fat has built up in your liver cells.
How should I prepare for a liver Fibroscan?
You must fast for at least 3 hours before the scan. This means no food or drinks (except small sips of water). Fasting is required because eating causes blood flow to your liver to increase, which can make your liver temporarily stiffer and give an inaccurate reading.
Do I need to stop taking medication?
No. You should take all your prescribed medications as usual with small sips of water. Tell the radiographer about any medications you are taking.
What happens when I arrive for my scan?
You will go to a private scanning room. The radiographer will ask you to lie flat on your back on a scan couch and lift your shirt to expose the right side of your chest and abdomen.
How is the procedure performed?
You will lie down with your right arm raised behind your head to expand the spaces between your ribs. The radiographer will apply a small amount of warm gel to the right side of your lower rib cage. They will place a special wand-like probe (transducer) against your skin and press gently. The probe will send painless sound waves (pulses) into your liver. You will feel a mild, rapid tapping sensation on your skin each time a measurement is taken. The radiographer will take about 10 measurements in the same area.
How long does a liver Fibroscan take?
The entire scan takes only 10 to 15 minutes. It is very quick, and you can leave immediately afterward.
Is there any discomfort?
No. The scan is completely painless. The probe generates a slight, quick tapping sensation on your skin, but it does not hurt.
Are there risks?
No. Fibroscan uses low-frequency sound waves and is completely safe. Unlike a traditional liver biopsy, there are no needles, no incisions, and no risks of bleeding or infection.
Can children have this scan?
Yes. Children can have this scan safely if it is requested by their referring doctor. Specialized, smaller probes are used for pediatric patients.
Can I have this scan if I am pregnant?
Yes, but you must tell your radiographer if you are pregnant. While the sound waves are safe, the scan is sometimes avoided in pregnancy because excess fluid in the body can alter the accuracy of the liver stiffness reading.
When will I get my results?
The machine calculates your scores immediately. The radiographer will print these scores and send a detailed report to your referring doctor, usually within the same day.
What if the scan finds something?
If the scan shows liver stiffness or fat build-up, do not panic. These findings help your referring doctor recommend lifestyle changes, start medications, or adjust your current treatment to protect your liver from further damage.
What are the important limitations?
Ultrasound does not use ionising radiation, but a useful result still depends on the clinical question, the operator, the equipment, patient anatomy, and whether the target can be reached by sound waves. Gas, bone, body habitus, pain, movement, and a limited acoustic window can hide disease. A normal scan does not automatically exclude the suspected condition; persistent or worsening symptoms need clinical reassessment and sometimes repeat ultrasound, CT, MRI, laboratory tests, or another specialist test.
Ultrasound should be used for a medical purpose, with output and examination time kept as low as reasonably achievable—especially in pregnancy and with Doppler. Internal scans and procedures require explanation, consent, privacy, and a chaperone according to patient preference and local policy.
Questions to ask your care team
- What exact question should this ultrasound answer, and could anything important remain unseen?
- Is this a screening, diagnostic, surveillance, or procedure-guidance examination, and will the result change care?
- What preparation is required, and should I continue all medicines unless my own clinician gives different instructions?
- When will I receive the signed report, who will explain it, and what symptoms should prompt urgent assessment rather than waiting?
Sources and further reading
Conclusion
A liver Fibroscan is a painless, simple alternative to a liver biopsy. To ensure the most accurate results, remember to fast strictly for 3 hours before your appointment, and bring along any previous liver test results to share with the team.