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By Mayo Clinic staffIt's important to eat and drink normally in the days leading up to the glucose tolerance test. Let your doctor know if you're ill or taking any medications, as these factors can affect the results of your test. For eight hours before the test, however, you won't be able to eat or drink anything. You might want to fast overnight and schedule the test for early the following morning.
- Glucose. Labtests Online. http://www.labtestsonline.org/understanding/analytes/glucose/test.html. Accessed May 20, 2010.
- Diagnosis of diabetes. National Institute of Diabetes and Digestive and Kidney Diseases. http://diabetes.niddk.nih.gov/dm/pubs/diagnosis/diagnosis.pdf. Accessed May 21, 2010.
- What I need to know about gestational diabetes. National Institute of Diabetes and Digestive and Kidney Diseases. http://diabetes.niddk.nih.gov/dm/pubs/gestational/gestationalDM.pdf. Accessed May 21, 2010.
- McCulloch DK. Screening for diabetes mellitus. http://www.uptodate.com. Accessed May 28, 2010.
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