What does a FibroScan measure?
Last content review 2026-09-23
The short answer
A FibroScan (vibration-controlled transient elastography) measures how stiff the liver is, as a surrogate for fibrosis, and many machines also estimate fat content (CAP). It is non-invasive and painless, but it gives an estimate of risk — it is not the same as a biopsy and results need clinical interpretation.
What is happening?
A probe sends a low-frequency shear wave into the liver and measures how fast it travels; stiffer tissue transmits it faster.
The result is reported in kilopascals, with higher values suggesting a higher probability of significant or advanced fibrosis.
Readings can be affected by recent food intake, inflammation, congestion of the liver, obesity and operator technique.
Why does this matter?
It allows fibrosis risk to be estimated without an invasive procedure, usually after a simple blood-based score such as FIB-4.
It helps identify people who need closer follow-up and those who can be reassured.
What does the evidence say?
Elastography is endorsed in AASLD and EASL–EASD–EASO pathways as a second-line test after blood-based risk scores.
Diagnostic accuracy is good but imperfect; discordant results are managed clinically, sometimes with additional testing.
Key takeaway
A FibroScan estimates liver stiffness and fat — useful, non-invasive, and always to be read by a clinician alongside everything else.
Sources & references
American Association for the Study of Liver Diseases
AASLD Practice Guidance on the clinical assessment and management of nonalcoholic fatty liver disease (2023) · Clinical guideline
View original sourceEASL, EASD and EASO
EASL–EASD–EASO Clinical Practice Guideline on MASLD (2024) · Clinical guideline
View original source
This page is general health education. It is not a diagnosis, and it cannot replace advice from your treating doctor. Never start or stop a prescribed medicine based on what you read here.
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