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A balanced AST/ALT ratio between 0.7 and 1.0 does not point to a specific liver disease pattern. This ratio is most clinically useful when enzymes are elevated — a normal ratio provides limited standalone information. It is consistent with no clear dominance of AST (suggesting alcoholic or non-hepatic origin) or ALT (suggesting acute hepatocellular disease).
A very low AST/ALT ratio (below 0.5) means ALT is much higher than AST. This pattern is typically seen in acute viral hepatitis, toxic hepatitis, or non-alcoholic fatty liver disease, where liver cells release far more ALT than AST. ALT is more liver-specific, so this pattern points strongly to pure liver cell damage.
Investigate with full hepatitis panel, liver ultrasound, and toxic exposure history. The low ratio helps is consistent with a hepatocellular (non-alcoholic) injury pattern.
AST/ALT Ratio: {{value}} — very low (ref: 0.7–1.0)A low AST/ALT ratio where ALT exceeds AST is characteristic of non-alcoholic fatty liver disease (Fatty liver not from alcohol (NAFLD)), acute viral hepatitis, or toxic liver injury. In these conditions, ALT rises more than AST because liver cells release more ALT during this type of inflammatory process. A low ratio is one diagnostic clue in distinguishing Fatty liver not from alcohol (NAFLD) from alcoholic liver disease.
Review in context of absolute enzyme values. If both are elevated with a low ratio, consider Fatty liver not from alcohol (NAFLD), viral hepatitis, or drug-induced injury as primary possibilities.
AST/ALT Ratio: {{value}} — low (ref: 0.7–1.0; typical in non-alcoholic liver disease)A slightly low AST/ALT ratio is a common pattern in non-alcoholic fatty liver disease and mild hepatocellular inflammation. It reflects relatively greater ALT elevation compared to AST, which is the expected pattern in most forms of non-alcoholic liver disease. This is a diagnostic clue when total enzyme values are also elevated.
Interpret in context of absolute enzyme levels. Slightly low ratio with normal enzymes is not clinically significant.
AST/ALT Ratio: {{value}} — borderline low (ref: 0.7–1.0)A balanced AST/ALT ratio between 0.7 and 1.0 does not point to a specific liver disease pattern. This ratio is most clinically useful when enzymes are elevated — a normal ratio provides limited standalone information. It is consistent with no clear dominance of AST (suggesting alcoholic or non-hepatic origin) or ALT (suggesting acute hepatocellular disease).
Use the absolute enzyme values for primary clinical interpretation. Ratio analysis is most helpful when enzymes are elevated.
AST/ALT Ratio: {{value}} — normal (ref: 0.7–1.0)An optimal AST/ALT ratio in the 0.7–1.0 range, when combined with normal absolute enzyme levels, provides reassurance about normal liver cell distribution of these enzymes and no specific liver disease pattern. This is the expected ratio in a healthy liver without a predominant disease process.
Excellent result in context of normal absolute enzyme levels.
AST/ALT Ratio: {{value}} — optimal (ref: 0.7–1.0)When the AST/ALT ratio rises above 1.0, AST is starting to exceed ALT. This pattern shifts concern toward alcohol-related liver disease, muscle involvement contributing to AST, or cardiac AST elevation. An AST/ALT ratio between 1 and 2 is not definitively diagnostic but is a prompt to review alcohol intake, medications, and cardiac status.
Review alcohol consumption history. If the ratio is rising over time or enzymes are also elevated, discuss with your doctor for further liver and cardiac evaluation.
AST/ALT Ratio: {{value}} — borderline elevated (ref: 0.7–1.0; borderline: 1.0–2.0)An AST/ALT ratio above 2.0 — known as the De Ritis ratio — is a strong diagnostic indicator of alcoholic liver disease. In alcoholic hepatitis, AST rises much more than ALT due to mitochondrial damage and vitamin B6 depletion (which impairs ALT synthesis more than AST). This ratio pattern, combined with clinical history, has high predictive value for alcohol-related hepatic injury.
Discuss alcohol consumption history honestly with your doctor. A ratio above 2 with elevated transaminases warrants further evaluation for alcoholic liver disease and intervention.
AST/ALT Ratio: {{value}} — elevated (ref: 0.7–1.0; elevated: >2.0)An AST/ALT ratio above 3.0 with elevated absolute values is highly suggestive of alcoholic liver disease or a significant non-hepatic contribution to AST (muscle breakdown, cardiac injury). In noticeable alcoholic hepatitis, this ratio can exceed 3 or even 4. This specific pattern helps distinguish alcoholic from non-alcoholic liver injury and guides targeted treatment.
Urgent evaluation with your doctor is needed. Complete history including alcohol use, cardiac markers, and muscle enzymes should be obtained to correctly identify the source of this ratio pattern.
AST/ALT Ratio: {{value}} — very high (ref: 0.7–1.0; critical: >3.0)Upload your lab report and get your actual values interpreted in plain English — instantly, with no medical training required.