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Also reported in: U/L
A normal AST level indicates that liver, muscle, and other tissues are not releasing this enzyme in abnormal quantities. While AST is less liver-specific than ALT (it also rises with muscle and heart injury), a normal level in the context of a full liver panel is reassuring for hepatic health. When AST and ALT are both normal, significant liver disease is unlikely.
AST is found in liver, heart, and muscle cells and rises when these tissues are damaged. A very low AST means no significant cell damage in these tissues is currently releasing this enzyme. This is a reassuring baseline result for liver, cardiac, and muscle health.
Excellent result. No liver or cardiac enzyme leakage detected.
AST: {{value}} {{unit}} — very low (ref: {{low}}–{{high}})Low AST indicates that liver cells, heart cells, and muscle cells are not releasing significant quantities of this enzyme, which would indicate damage. Very low B6 levels can occasionally lower AST readings, but in the absence of B6 deficiency, a low result is simply reassuring.
Good result. No organ stress detectable from this marker.
AST: {{value}} {{unit}} — low (ref: {{low}}–{{high}})A borderline low AST is within the healthy range and indicates no significant liver, heart, or muscle cell damage. AST in this zone provides reassurance about organ health and is consistent with no active inflammatory injury to tissues containing this enzyme.
No action needed. This is a healthy result.
AST: {{value}} {{unit}} — low normal (ref: {{low}}–{{high}})A normal AST level indicates that liver, muscle, and other tissues are not releasing this enzyme in abnormal quantities. While AST is less liver-specific than ALT (it also rises with muscle and heart injury), a normal level in the context of a full liver panel is reassuring for hepatic health. When AST and ALT are both normal, significant liver disease is unlikely.
Normal result. No action needed. Combine with ALT interpretation for a complete liver picture.
AST: {{value}} {{unit}} — normal (ref: {{low}}–{{high}})An optimal AST in the mid-normal range provides strong reassurance that liver cells and other AST-containing tissues are functioning without measurable stress or injury. When combined with a similarly optimal ALT, this represents a very healthy liver enzyme picture.
Excellent result. Liver enzymes are in ideal shape. Maintain healthy habits.
AST: {{value}} {{unit}} — optimal (ref: 10–30)A borderline elevated AST means some degree of liver, muscle, or cardiac cell stress is releasing small quantities of this enzyme. Because AST is not liver-specific, the cause could be vigorous exercise, mild liver irritation from alcohol or medications, or early cardiac stress. The AST-to-ALT ratio helps narrow down which tissue is the source.
Review with your doctor. Discuss recent exercise, alcohol intake, and medications. Retest in 1–3 months and check the AST/ALT ratio.
AST: {{value}} {{unit}} — borderline elevated (ref: {{low}}–{{high}}; borderline: 40–60)An elevated AST indicates meaningful cellular injury. When both AST and ALT are elevated, liver disease is most likely. When AST is elevated disproportionately to ALT (AST:ALT ratio >2), alcoholic liver disease becomes a strong consideration. AST can also rise noticeably with muscle injury, rhabdomyolysis, or cardiac events.
Medical evaluation is needed. Full liver panel, AST/ALT ratio, cardiac enzymes if appropriate, and medication review will help identify the cause.
AST: {{value}} {{unit}} — elevated (ref: {{low}}–{{high}}; elevated: >60)A very high AST above 300 IU/L represents catastrophic cellular injury. Levels this high are seen in acute liver failure, noticeable viral hepatitis, major muscle destruction (rhabdomyolysis), serious cardiac events, or drug toxicity. The body is releasing large quantities of AST as cells rupture in large numbers.
Go to the emergency room immediately. Critical AST elevation is a medical emergency requiring urgent diagnosis and management to prevent organ failure.
AST: {{value}} {{unit}} — very high (ref: {{low}}–{{high}}; critical: >300)Upload your lab report and get your actual values interpreted in plain English — instantly, with no medical training required.