Main content Oral Glucose Tolerance Test

    Oral Glucose Tolerance Test



    What Affects the Test

    Reasons you may not be able to have the test or why the results may not be helpful include:

    • Smoking.
    • Taking certain medicines, such as corticosteroids, diuretics, seizure medicines, birth control pills, nonsteroidal anti-inflammatory drugs (NSAIDs), and some medicines used to treat high blood pressure.
    • Alcohol.
    • Recent surgery, illnesses, and infectious diseases.
    • Weight loss through dieting.
    • Long periods of bed rest (such as from a hospitalization or illness).


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