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The AST Test measures aspartate aminotransferase, an enzyme found in the liver, heart, muscles, and other tissues. Elevated AST may indicate liver disease, heart attack, muscle injury, or other organ damage. Doctors order this test to evaluate symptoms such as fatigue, weakness, or jaundice and often pair it with ALT for accurate liver assessment. Results provide key insight into liver function, muscle health, and overall metabolic balance.
This test measures AST, ALT, and Platelet Count to help you calculate your own FIB-4 Index — a non-invasive indicator of liver health and fibrosis risk.
