Hello - thanks for asking your question.
Elevated GGT levels indicate that something is going on with your liver but not specifically what. In general, the higher the level the greater the “insult” to your liver. Elevated levels may be due to liver disease, but they may also be due to
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Left-sided heart failure
Right-sided heart failure heart failure, alcohol, and use of many prescription and non-prescription drugs including nonsteroidal anti-inflammatory drugs (NSAIDs),
lipidCoronary risk profile
High blood cholesterol and triglycerides-lowering drugs, antibiotics, histamine blockers (used to treat excess stomach acid production), antifungal agents, seizure
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Control rx medications, antidepressants, and hormones such as testosterone. Oral contraceptives (birth control pills) and clofibrate can decrease GGT levels.
Even small amounts of alcohol within 24 hours of your GGT test may cause a temporary increase in the GGT. If this occurs, your doctor may want to repeat the test to verify that it is normal.
GGT levels fall after meals, so it is best to be tested when you have not eaten for at least 8 hours.
Smoking can also increase GGT.
Levels of GGT increase with age in women, but not in men, and are always somewhat higher in men than in women.
GGT is about twice as high in persons of African ancestry as in those of European ancestry.
GGT is very sensitive and can be increased when you don’t have symptoms. This elevation may be temporary, perhaps due to medications you are taking or alcohol ingested within 24 hours of the test. If other liver enzymes are normal, your doctor may just wait and then repeat the GGT test. If the GGT is very high and/or your other liver enzymes are elevated, your doctor may want to do more extensive testing to search for the cause.
I stress that this answer is not intended as and does not substitute for medical advice - please see your primary care physician for further evaluation of your individual case.
Thanks,
Kevin, M.D.
GGT is a very sensitive test (the wine you mentioned could be responsible for the GGT being elevated.)