From Christiansted St. Croix, United States Virgin Islands:
How long should you fast for a fasting blood sugar test?
Ask the clinician who ordered the test for specific instructions. In general if you were looking to make a diagnosis of diabetes on a fasting blood glucose level, you would not eat for the overnight time period, and have a blood sugar done first thing in the morning, without having any food or drink except water. If it is a glucose tolerance test, which is not done as commonly now, it is important to eat well for the few days before the test.
Original posting 16 Mar 1999
Posted to Blood Tests and Insulin Injections
Last Updated: Tuesday April 06, 2010 15:09:01
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