An
isolatedIsolated sleep paralysis elevation in serum GGT or a GGT elevation out of proportion to that of other enzymes (such as the alkaline phosphatase and alanine aminotransferase) may be an indicator of alcohol abuse or alcoholic liver disease.
Elevated serum activity is found in diseases of the liver, biliary tract, and pancreas. I would repeat the GGT again off alcohol in another month. If it continues to be elevated, I would consider a hepatitis screen and an abdominal ultrasound. That would be the most reasonable initial test to evaluate the liver and gallbladder.
Followup with your personal physician is essential.
This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.
Thanks,
Kevin, M.D.
Bibliography:
Pratt et al. Alkaline phosphatase and other enzymatic measures of cholestasis. UptoDate, 2004.