1. What is an AST/ALT Ratio Calculator?

Definition: This calculator determines the ratio between two important liver enzymes: Aspartate Aminotransferase (AST) and Alanine Aminotransferase (ALT).

Purpose: The AST/ALT ratio helps clinicians assess liver health and differentiate between various liver diseases.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Ratio \) — AST/ALT ratio (dimensionless)
• \( AST \) — Aspartate aminotransferase level (U/L)
• \( ALT \) — Alanine aminotransferase level (U/L)

Explanation: The ratio is calculated by dividing the AST value by the ALT value.

3. Clinical Significance of AST/ALT Ratio

Details: The ratio can help differentiate between alcoholic liver disease (ratio >2), non-alcoholic fatty liver disease (ratio <1), and viral hepatitis.

4. Using the Calculator

Tips: Enter both AST and ALT values in U/L. Both values must be > 0 for calculation.

5. Frequently Asked Questions (FAQ)

Q1: What is a normal AST/ALT ratio?
A: In healthy individuals, the ratio is typically about 1.1 (AST slightly higher than ALT).

Q2: What does a high ratio indicate?
A: A ratio >2 suggests alcoholic liver disease, while ratios >1 may indicate cirrhosis.

Q3: What does a low ratio indicate?
A: A ratio <1 is often seen in acute viral hepatitis or non-alcoholic fatty liver disease.

Q4: Are there limitations to this ratio?
A: Yes, the ratio should always be interpreted in clinical context with other tests and patient history.

Q5: What are typical normal ranges for AST and ALT?
A: AST: 10-40 U/L, ALT: 7-56 U/L (varies by lab and gender).