APRI (AST to Platelet Ratio Index)

Simple noninvasive index for significant fibrosis/cirrhosis, using only AST and platelet count.

For healthcare professionals.These calculate a score or a measurement from values you enter. They do not diagnose, and they are no substitute for clinical judgement. If you are a patient, discuss any result with your own doctor rather than acting on it.

ASTU/L

Lab's AST Upper Limit of NormalDefaults to 40 U/L if your lab's specific ULN isn't entered — check your lab report.U/L

Platelet Count×10⁹/L

Enter the values above to see the result.

Source

Wai CT, Greenson JK, Fontana RJ, et al. A simple noninvasive index can predict both significant fibrosis and cirrhosis in patients with chronic hepatitis C. Hepatology. 2003;38(2):518-526.

Shown for reference and checked against the source above. Confirm against current guidance before acting on it, and use your own clinical judgement.

These live inside Kyorit MD too

Specialists get the full set, including dosing and infusion calculators, alongside virtual chambers and board consultations.

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