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A 41-year-old member asked:

Is it safe to drink water when you are fasting for a glucose blood test?

1 doctor answer1 doctor weighed in
Dr. Douglas Miller
Pathology 41 years experience
Yes: Water is fine before a blood glucose test, but don't eat any food or drink other liquids which might falsely elevate the glucose level in the blood.

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Last updated Oct 21, 2020
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