FibroScan is a non-invasive, painless test used to evaluate the health of your liver. The test measures liver stiffness (fibrosis or scarring) and estimates the amount of fat present in the liver.
FibroScan uses a specialized ultrasound-based technology called transient elastography to assess liver tissue without the need for needles, sedation, or surgery.
The examination provides important information about liver health and helps physicians diagnose, monitor, and manage chronic liver diseases. Unlike a liver biopsy, FibroScan is quick, comfortable, and does not require recovery time.
Reasons for a FibroScan
Your healthcare provider may recommend a FibroScan to evaluate liver disease, including:
- Fatty liver disease (NAFLD)
- Metabolic dysfunction-associated steatotic liver disease (MASLD)
- Nonalcoholic steatohepatitis (NASH)
- Alcohol-related liver disease
- Chronic hepatitis B
- Chronic hepatitis C
- Autoimmune liver disease
- Hemochromatosis
- Other chronic liver conditions
Assessing liver fibrosis (scarring)
A FibroScan also helps your provider:
- Determine the extent of liver damage
- Monitor progression of liver disease
- Evaluate response to treatment
- Help determine the need for additional testing
Monitoring patients at risk for liver disease
Your provider may also recommend a FibroScan if you have risk factors such as:
- Obesity
- Type 2 diabetes
- Metabolic syndrome
- Elevated liver enzymes
- Family history of liver disease
Benefits of FibroScan
FibroScan offers several advantages over more invasive testing methods. Benefits include:
- Non-invasive procedure
- No needles or injections
- No sedation required
- No pain
- Quick examination (usually 5–15 minutes)
- Immediate results available
- No recovery time
- Helps reduce the need for liver biopsy in many patients
- Allows ongoing monitoring of liver health
How FibroScan works
FibroScan uses gentle sound waves to measure liver stiffness and liver fat content. Two measurements are obtained:
- Liver Stiffness Measurement (LSM) — measures how stiff the liver tissue is; higher values may indicate liver fibrosis (scarring), advanced fibrosis, or cirrhosis.
- Controlled Attenuation Parameter (CAP) — estimates the amount of fat stored within the liver; higher scores may indicate fatty liver disease or increased liver fat.
Your healthcare provider will interpret these measurements together with your medical history, laboratory tests, and imaging studies.
Who may need a FibroScan?
You may be a candidate for a FibroScan if you:
- Have elevated liver enzymes
- Have been diagnosed with fatty liver disease
- Have obesity or are overweight
- Have type 2 diabetes
- Have metabolic syndrome
- Have chronic hepatitis B or C
- Consume alcohol regularly
- Have a family history of liver disease
- Need monitoring of an existing liver condition
How to prepare
Proper preparation helps ensure accurate results. Before your appointment, please:
- Do not eat or drink anything except water for at least 3 hours before your test.
- Continue taking your medications unless instructed otherwise.
- Wear comfortable, loose-fitting clothing.
- Inform your healthcare provider if you are pregnant or think you may be pregnant.
- Inform your provider of any recent illness or hospitalization.
What to expect during the procedure
- Your height and weight may be recorded, and you will be asked about your medical history.
- You will lie comfortably on your back with your right arm positioned above your head.
- A trained healthcare professional will apply a small amount of gel to the skin over your liver.
- A probe will be placed against the skin between your ribs.
- The device delivers painless vibrations and ultrasound waves through the liver.
- Multiple measurements will be obtained to ensure accuracy.
- The examination typically takes approximately 5 to 15 minutes, and most patients find it comfortable and easy to tolerate.
After the procedure
- You may immediately resume normal activities.
- There are no restrictions on driving, eating, or working.
- No recovery period is required.
- Your provider may review preliminary results during your visit.
Results are interpreted along with laboratory studies, imaging findings, and your overall clinical picture.
Understanding your results
FibroScan results provide information about liver fibrosis and liver fat content. Fibrosis results may range from minimal or no fibrosis, to mild, moderate, or advanced fibrosis, to cirrhosis. Liver fat results (the CAP score) may range from minimal liver fat to mild, moderate, or severe fatty liver.
Your healthcare provider will explain what your results mean and discuss any recommended treatment or follow-up.
Risks and possible complications
FibroScan is considered extremely safe, and there are no known significant risks associated with the procedure. Unlike a liver biopsy, FibroScan:
- Does not require needles
- Does not cause bleeding
- Does not require sedation
- Does not require hospitalization
Most patients experience no discomfort or side effects.
Limitations of FibroScan
Although FibroScan is highly useful, it may not be appropriate in all situations. Factors that may affect test accuracy include:
- Severe obesity
- Significant abdominal fluid (ascites)
- Certain anatomical variations
- Difficulty obtaining adequate measurements
In some cases, additional testing such as blood work, imaging studies, or a liver biopsy may still be necessary.
Management of fatty liver disease
If fatty liver disease is identified, your provider may recommend:
- Weight loss
- Dietary modifications
- Regular exercise
- Blood sugar control
- Cholesterol management
- Limiting or avoiding alcohol
- Medical treatment when appropriate
Early detection and treatment can help prevent progression to advanced liver disease.