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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