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Dr. Andrew Rynne
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Dr. Andrew Rynne

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Exp 50 years

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How Long Do You Have To Fast Prior To A Diabetes Blood Test ?

How long do you have to fast prior to a diabetes blood test ?
posted on Sun, 20 Dec 2009
Twitter Sun, 20 Dec 2009 Answered on
Twitter Sun, 20 Dec 2009 Last reviewed on
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  Anonymous's Response
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Standard rules dictate that in order that the sample to be "fasting", you must not have had anything to eat or drink from 8-12 hours. At least 8 hours, but not more than 12, or you run the risk of dehydration or fainting. Best to check with your doc or the lab where you will be doing the test.
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How Long Do You Have To Fast Prior To A Diabetes Blood Test ?

Standard rules dictate that in order that the sample to be "fasting", you must not have had anything to eat or drink from 8-12 hours. At least 8 hours, but not more than 12, or you run the risk of dehydration or fainting. Best to check with your doc or the lab where you will be doing the test.