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Printed on 4/19/2026
For informational purposes only. This is not medical advice.
The AST/ALT (De Ritis) ratio is a simple enzyme ratio used as an adjunct in liver disease pattern assessment. Different ratio ranges can suggest different injury patterns but must be interpreted with full laboratory and clinical context.
Formula: AST/ALT Ratio = AST / ALT.
The ratio helps describe liver enzyme pattern but should be interpreted alongside absolute AST/ALT values and full hepatic assessment.
Use as a quick adjunct in liver enzyme interpretation, chronic liver disease follow-up, and hepatology triage discussions.
The ratio is non-specific and influenced by non-hepatic AST sources (muscle injury, hemolysis), assay timing, and mixed disease processes.
For related assessments, see FIB-4, MELD Score and Child-Pugh Score.
Disclaimer: This tool is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider with questions about your health.
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