GGT

You should get a GGT test if you have jaundice, abdominal pain, nausea, dark urine, pale stools, or itching, or if your alkaline phosphatase is high. It is also recommended for people with regular alcohol use, fatty liver, gallstones, or hepatitis, those taking liver-affecting medicines, and for monitoring alcohol abstinence.

Fasting for 8–12 hours is usually recommended before a GGT test, and you may drink water during this time. Avoid alcohol for at least 24–48 hours, as even small amounts can raise GGT levels. Inform your doctor about medicines like phenytoin, phenobarbital, or other drugs and supplements you take, as they can affect results.

Yes, fasting is usually recommended for a GGT test. You should fast for 8–12 hours before giving your sample, though drinking water is allowed. Most importantly, avoid alcohol for at least 24–48 hours beforehand, as even small amounts can raise GGT levels and affect the accuracy of your results.