Lok Index — Cirrhosis Prediction in Hepatitis C

Calculate the Lok Index using platelet count, PT ratio, and AST/ALT ratio to predict cirrhosis probability in chronic hepatitis C patients, with Lok >0.5 predicting cirrhosis.

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Clinical Guidance

BMI is a screening measure of body size, not a direct measure of body fat. The standard WHO categories are underweight (<18.5), normal (18.5–24.9), overweight (25–29.9), and obese (≥30).

BMI can overestimate body fat in athletes with high muscle mass and underestimate it in older adults with low muscle mass. Interpret it alongside waist circumference and clinical context rather than as a standalone diagnosis.

⚕ Clinical Disclaimer: These calculators are for educational and reference purposes only. Always verify results with qualified clinical judgment and current clinical guidelines. Do not use as a sole basis for medical decisions.
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How It Works

Calculate the Lok Index using platelet count, PT ratio, and AST/ALT ratio to predict cirrhosis probability in chronic hepatitis C patients, with Lok >0.5 predicting cirrhosis

Each component has a specific meaning:

  • Platelet count — The platelet count recorded for the scenario being assessed.
  • PT ratio — The pt ratio recorded for the scenario being assessed.
  • AST/ALT ratio — The ast/alt ratio recorded for the scenario being assessed.

Note: Interpret the lok index result against the thresholds and context described above.

How to Use

Enter the platelet count, PT ratio, AST/ALT ratio for the scenario you are assessing. Calculate the Lok Index using platelet count, PT ratio, and AST/ALT ratio to predict cirrhosis probability in chronic hepatitis C patients, with Lok >0.5 predicting cirrhosis. Use the lok index result to inform your calculation.

Frequently Asked Questions