AST Lab Test: Normal Range vs. Functional Optimal Range
Learn the difference between standard reference ranges and functional optimal ranges for AST (aspartate aminotransferase), what your results mean, and when to act.
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Ast (Lab Test)
6 clinically reviewed articles, written and peer-reviewed by the HealthRX Medical Team.
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2026-05-25latest review
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Ast (Lab Test) library
Showing 6 of 6 clinical reviews.
AST: How to Interpret Your Result
Learn what your AST blood test result means, what normal ranges look like, and when elevated or low levels signal a problem worth investigating with your doctor.
Read clinical reviewAST: What This Test Actually Measures
AST (aspartate aminotransferase) is an enzyme found in the liver, heart, and muscles. Learn what AST blood tests measure, normal ranges, and what high or low results mean for your health.
Read clinical reviewAST: What Your Number Changes About Your Treatment
Your AST level directly shapes medication choices, dosing, and monitoring intervals. Learn what normal, high, and low AST mean for your prescriptions and clinical care.
Read clinical reviewAST: When to Order This Test and What the Results Mean
Learn when clinicians order an AST blood test, what normal AST levels look like, and how to interpret high or low results in the context of liver, cardiac, and muscle health.
Read clinical reviewAST: Which Tests to Order Alongside for a Complete Clinical Picture
A clinician-focused guide to the tests that should accompany an AST order, including ALT, GGT, ALP, bilirubin, albumin, and hepatitis serologies, with interpretation frameworks and evidence-based rationale.
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