//labtestsonline.org/understanding/analytes/ggt/tab/test
"Normal results in females under age 45, range from 5 to 27 U/L; in females over age 45 and in males, levels range from 6 to 37 U/L. "
"Elevations may indicate any acute hepatic disease, acute pancreatitis, renal disease, alcohol ingestion, postoperative status, and prostatic metastasis. This test is nonspecific, providing little data about the type of hepatic disease.