Home » Ortho Related » Medications » Gamma-Glutamyl Transpeptidase (GGT) Gamma-Glutamyl Transpeptidase (GGT) - Male 9-50 U/L; Female 8-40 U/L; - Note: Generally parallels changes in Serum Alkaline Phosphatase and 5'nucleotidase in Liver dz; - Increased: Liver disease (Hepatitis, Cirrhosis, Obstr. Jaundice; Pancreatitis Alcohol Meds: FLUOXETINE