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Liver Enzyme (ALT/AST Ratio) Calculator

Calculate liver enzyme ALT/AST ratio from ALT level, AST level, ALT/AST ratio, and age.

Liver Enzyme (ALT/AST Ratio) Calculator

Calculate liver enzyme ALT/AST ratio from ALT level, AST level, ALT/AST ratio, and age.

Input your liver enzyme data

Formula

ALT/AST ratio = ALT level (U/L) / AST level (U/L).

If ratio not provided: Calculated from ALT and AST levels from liver function tests.

Normal ranges: ALT: 7-56 U/L (men), 5-36 U/L (women). AST: 10-40 U/L (men), 9-32 U/L (women). Normal ALT/AST ratio is typically < 1.0.

ALT/AST ratio helps distinguish between different types of liver disease. Elevated enzymes and abnormal ratios may indicate liver damage or disease.

Steps

  • Enter ALT (alanine aminotransferase) level (U/L) from liver function test.
  • Enter AST (aspartate aminotransferase) level (U/L) from liver function test.
  • Optionally enter ALT/AST ratio if calculated.
  • Enter your age (liver enzyme ranges can vary by age).
  • Review ALT/AST ratio, liver health status, and recommendations.

Additional calculations

Enter your liver enzyme data to see additional insights.

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Complete guide snapshot

ALT and AST are liver enzymes that indicate liver health. The ALT/AST ratio helps distinguish between different types of liver disease. Normal ratio is typically less than 1.0, with normal ALT: 7-56 U/L (men) and AST: 10-40 U/L (men).

Use this calculator to assess ALT/AST ratio from ALT level, AST level, ALT/AST ratio (optional), and age.

FAQs

What are ALT and AST?

ALT (alanine aminotransferase) and AST (aspartate aminotransferase) are liver enzymes that indicate liver health. Elevated levels may indicate liver damage or disease.

What are normal ALT and AST levels?

Normal ALT: 7-56 U/L for men, 5-36 U/L for women. Normal AST: 10-40 U/L for men, 9-32 U/L for women. Ranges may vary by lab and individual factors.

What is the ALT/AST ratio?

The ALT/AST ratio helps distinguish between different types of liver disease. Normal ratio is typically less than 1.0. Higher ratios may indicate specific liver conditions.

What causes elevated liver enzymes?

Elevated ALT/AST can result from alcohol use, medications, viral hepatitis, fatty liver disease, autoimmune conditions, or other liver disorders. Non-liver causes include muscle injury.

What does a high ALT/AST ratio mean?

A ratio greater than 1.0 (ALT > AST) may suggest alcoholic liver disease, non-alcoholic fatty liver disease, or viral hepatitis. Interpretation depends on absolute levels and clinical context.

What does a low ALT/AST ratio mean?

A ratio less than 1.0 (AST > ALT) may suggest cirrhosis, alcoholic hepatitis, or other advanced liver disease. However, interpretation requires clinical correlation.

Does age affect liver enzymes?

Liver enzyme levels can vary slightly with age. Older adults may have slightly different normal ranges. Age-specific reference ranges are important for accurate interpretation.

Can I track liver enzymes at home?

Home liver enzyme tests are limited. Liver function tests (LFTs) through healthcare providers provide accurate ALT/AST measurements. Regular monitoring is important for liver health.

What about lifestyle factors?

Alcohol consumption, medications, obesity, and diet can affect liver enzymes. Reducing alcohol, maintaining healthy weight, and avoiding hepatotoxic substances support liver health.

When should I consult a healthcare provider?

Consult a healthcare provider if liver enzymes are elevated, if you have symptoms (jaundice, fatigue, abdominal pain), or if you have concerns about liver health or liver disease risk.

Summary

This tool calculates liver enzyme ALT/AST ratio from ALT level, AST level, ALT/AST ratio (optional), and age.

Outputs include ALT level, AST level, ALT/AST ratio, ratio score, status, recommendations, an action plan, and supporting metrics.

Formula, steps, guide content, related tools, and FAQs ensure humans or AI assistants can interpret the methodology instantly.

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Liver Enzyme (ALT/AST Ratio) Calculator

Calculate liver enzyme ALT/AST ratio from ALT level, AST level, ALT/AST ratio, and age.

How to use Liver Enzyme (ALT/AST Ratio) Calculator

Step-by-step guide to using the Liver Enzyme (ALT/AST Ratio) Calculator:

  1. Enter your values. Input the required values in the calculator form
  2. Calculate. The calculator will automatically compute and display your results
  3. Review results. Review the calculated results and any additional information provided

Frequently asked questions

How do I use the Liver Enzyme (ALT/AST Ratio) Calculator?

Simply enter your values in the input fields and the calculator will automatically compute the results. The Liver Enzyme (ALT/AST Ratio) Calculator is designed to be user-friendly and provide instant calculations.

Is the Liver Enzyme (ALT/AST Ratio) Calculator free to use?

Yes, the Liver Enzyme (ALT/AST Ratio) Calculator is completely free to use. No registration or payment is required.

Can I use this calculator on mobile devices?

Yes, the Liver Enzyme (ALT/AST Ratio) Calculator is fully responsive and works perfectly on mobile phones, tablets, and desktop computers.

Are the results from Liver Enzyme (ALT/AST Ratio) Calculator accurate?

Yes, our calculators use standard formulas and are regularly tested for accuracy. However, results should be used for informational purposes and not as a substitute for professional advice.