Abnormal Liver Blood Tests
If your liver function tests (ALT, AST, ALP, or bilirubin) come back outside the normal range, FibroScan can help show whether scarring or fat has built up in the liver.
AI Summary FibroScan, also called transient elastography, is a painless, non-invasive scan that measures liver stiffness (kPa) and fat (CAP score) in about 5 to 10 minutes, with no needles, sedation, or radiation. Doctors use it to check for scarring and fatty buildup, often after abnormal blood tests or when monitoring hepatitis, fatty liver, or alcohol-related liver disease. Results are read with blood work and history, and unclear results may lead to follow-up imaging or a biopsy.
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FibroScan (Transient Elastography)
Medically Reviewed.
FibroScan, also called transient elastography, is a quick, non-invasive test that measures the stiffness and fat content of your liver. It works similarly to an ultrasound and helps your doctor assess liver health without a biopsy.
FibroScan does not diagnose a specific disease on its own, but it detects fibrosis (scarring) and steatosis (fatty buildup), two key changes seen in chronic liver conditions. Results are read alongside liver function tests, other blood work, and your medical history.
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Liver Stiffness Test Basics
What Is a FibroScan?
FibroScan (also called transient elastography) is a quick, non-invasive test that measures the stiffness and fat content of your liver. It is similar to an ultrasound and helps your doctor assess the health of your liver without the need for a biopsy.
While FibroScan does not directly diagnose a specific disease, it detects fibrosis (scarring) and steatosis (fatty accumulation), two key changes seen in chronic liver conditions such as fatty liver disease, viral hepatitis, and alcohol-related liver disease. This makes it a useful tool for catching liver problems early and for monitoring conditions that are already known.
The test is painless, quick — about 5 to 10 minutes — and usually done in a doctor's office or hospital clinic. Results are reported alongside liver function tests and other blood work, not in place of them.
Quick Test Summary
FibroScan at a Glance
FibroScan uses a small probe placed on the skin over your liver to send painless sound waves through the tissue. The speed of those waves tells your doctor how stiff your liver is and how much fat it holds.
FibroScan at a Glance
- The test is painless, takes about 5 to 10 minutes, and needs no sedation, needles, or radiation.
- It reports two main numbers: liver stiffness (fibrosis score) in kPa, and the Controlled Attenuation Parameter (CAP score) in dB/m for fat.
- A third value, the interquartile range (IQR), checks how consistent your readings were; above 30% variability may mean a repeat test is needed.
- Abnormal results are a reason for follow-up, not an automatic diagnosis — your doctor will look at them alongside blood tests, imaging, or a biopsy.
Reasons for Liver Scarring Check
Why You Might Have This Test
Doctors order FibroScan to check for liver scarring or fat buildup, often before considering a more invasive test like a biopsy.
Monitoring a Known Liver Condition
People being followed for hepatitis B or C, fatty liver disease (NAFLD/NASH), or alcohol-related liver disease may have repeat FibroScans to track changes over time.
Metabolic Risk Factors
Obesity, type 2 diabetes, and high cholesterol raise the risk of fatty liver disease, so doctors may use FibroScan to screen for early liver damage in these patients.
Medication or Alcohol History
Long-term use of medications that can affect the liver, or a history of heavy alcohol use, may prompt a doctor to check liver stiffness and fat with FibroScan.
FibroScan Procedure Steps
What to Expect During the Test
Before the Scan
You lie on your back with your right arm raised behind your head, exposing the right side of your abdomen. No fasting, sedation, or contrast dye is needed for most patients.
A technician places a small probe on your skin over the liver. The probe sends painless, low-frequency vibrations into the liver and measures how fast they travel through the tissue — faster travel means stiffer, more scarred tissue. The scan takes about 5 to 10 minutes and several measurements are averaged for accuracy.
After the Scan
You can resume normal activity right away. Your doctor will review the stiffness score, CAP score, and IQR, and may order follow-up blood work, additional imaging, or a biopsy if results are unclear or concerning.
Stiffness and CAP Scores
How to Interpret Your Results
Both Scores in the Normal Range
Normal liver stiffness (below 5.5 kPa) together with a low CAP score (below 238 dB/m) generally points to a healthy liver, with no or minimal fibrosis and little to no fat buildup.
Elevated Liver Stiffness
Higher stiffness readings (5.5–7.0 kPa mild, 7.1–9.5 kPa moderate, 9.6–12.5 kPa severe, above 12.5 kPa cirrhosis) suggest scarring from a chronic liver condition such as hepatitis, alcohol-related liver disease, or NASH.
Elevated CAP Score
A higher CAP score (238–259 dB/m mild, 260–290 dB/m moderate, above 290 dB/m severe) points toward fatty liver. Results are always read together with your blood tests, imaging, and medical history — not on their own.
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Common Questions
Answers to Common FibroScan Questions
Is FibroScan painful?
No. FibroScan is completely painless. You feel a light vibration and slight pressure from the probe, similar to a regular ultrasound, but there is no needle, incision, or sedation involved.
Can FibroScan diagnose liver disease on its own?
FibroScan alone cannot diagnose a specific liver disease. It detects fibrosis (scarring) and steatosis (fat), which are signs seen in many chronic liver conditions. Your doctor combines the results with your liver function tests, other blood work, and history to reach a diagnosis.
Does FibroScan replace a liver biopsy?
FibroScan is a screening and monitoring tool, not a replacement for biopsy in every case. It is non-invasive and repeatable, which makes it useful for tracking changes over time, but your doctor may still recommend a biopsy if results are unclear or if a precise fibrosis stage is needed.
What does a high IQR on my report mean?
If your IQR (interquartile range) is above 30%, your readings varied too much to be reliable, and your doctor may ask you to repeat the test. This can happen with obesity, ascites, or if the probe was not positioned consistently.
How often should I repeat a FibroScan?
How often you need a repeat FibroScan depends on your condition, risk factors, and how your first result looked. Your doctor will set a monitoring schedule based on your individual situation.
Medical disclaimer: LiverDirectory provides educational information and a directory of providers. It does not provide medical advice, diagnosis, or treatment. Always consult a licensed physician regarding any medical condition.