Blood test shows gama gt is high at 150. what does it mean?

Abnormal liver test: A GGT is one of several blood tests done to evaluate the function of the liver. A GGT may be elevated in the presence of too much alcohol consumption, hepatitis, other viral illness, chronic overuse of the pain reliever aceteminophen, etc. A doctor might order a repeat of this test and if it continues to be elevated, do further testing to sort out the cause. No alcohol or tylenol (acetaminophen) for now, though!

May just be you: Some people run a GGT that's several times normal, through their lives. Occasionally I have to write letters on behalf of these people, who are accused of being secret alcohol abusers. If the high GGT is brand-new, there may be another explanation. Your physician knows how to follow up.