A 2-hour value between 140 and 200 mg/dL (7.8 and 11.1 mmol/L) is called impaired glucose tolerance. Your provider may call this pre-diabetes. It means you are at increased risk of developing diabetes over time. Any glucose level of 200 mg/dL (11.1 mmol/L) or higher is used to diagnose diabetes.
YOU MUST BE FASTING for this test. DO NOT eat or drink anything except WATER for at least 8 hours before the test. You may drink plain water ONLY. Do NOT drink coffee, tea, soda (regular or diet) or any other beverages.
High levels of GGT in the blood may be a sign of liver disease or damage to the bile ducts. Bile ducts are tubes that carry bile in and out of the liver. Bile is a fluid made by the liver. It is important for digestion. A GGT test can’t diagnose the specific cause of liver disease.
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