Enzymes

The Enzymes category explains lab tests that measure enzyme activity—ALT, AST, ALP, GGT, CK-MB, Troponin, amylase, lipase, etc.—to help diagnose and monitor organ injury and disease.

GGT Test infographic showing liver, enzyme functions, toxin breakdown, and normal GGT reference ranges.

GGT Test: Functions, Normal Range, Causes of High and Low Levels

The GGT (Gamma-Glutamyl Transferase) test measures enzyme levels that reflect liver and bile duct health. High GGT may indicate alcohol use, liver disease, or bile duct obstruction, while low GGT usually means healthy function. Learn about its normal range, functions, causes of abnormal results, and when to consult a doctor.

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