5, you have no fibrosis or just a little. If your
APRI score
is 1.5 or above, you probably have cirrhosis.
APRI scores between 0.5 and 1.5 are related to progressive fibrosis stages, like Metavir F1-to-F4.
That's all there is to it. It's simple, has a good level of reliability compared to other fibrosis tests, and you can calculate it yourself from your blood tests.