A validated non-invasive score used to decide whether liver fibrosis is unlikely enough to stop looking, or needs a specialist test.
| Result | Band |
|---|---|
| Under 1.30 | Advanced fibrosis unlikely |
| 1.30 to 2.67 | Indeterminate, further testing usual |
| Above 2.67 | Advanced fibrosis more likely |
FIB-4 = (age × AST) ÷ (platelets × √ALT). ⚠️ The 1.30 threshold is less reliable above age 65, where 2.0 is often used instead.
BloodMarker reads your whole panel and tells you what the lines say together, which is the part no single calculation can do.
Your values carry over · PDF or a photo · about 8 seconds
It is a score combining age, two liver enzymes and platelet count, used as a first-line non-invasive check for advanced liver fibrosis.
A score under 1.30 makes advanced fibrosis unlikely and is often used to rule it out without further imaging. It is not a guarantee.
Not medical advice. These calculators are for information only. Reference bands differ between laboratories and none of these numbers can be interpreted without your history, your other results and a clinician. Nothing you type here is sent to us or stored on a server.