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Dr. Andrew Rynne
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Dr. Andrew Rynne

Family Physician

Exp 50 years

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Could Food Consumed Before Fasting Blood Glucose Test Show False Positive Results?

I recently was told I have diabetes. The VA has been my health provider for years. I am 56, good health, no symptoms. When I did my fasting test, I forgot, and ate a small bran muffin, and coffee with cream and sugar, Could this cause a false positive? I am getting rechecked tomorrow.
posted on Sun, 31 May 2015
Twitter Mon, 4 Jan 2021 Answered on
Twitter Wed, 6 Jan 2021 Last reviewed on
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Internal Medicine Specialist,  's  Response
Hi,

Yes, these things you ate can cause false-positive results. When we say fasting we mean total fasting for at least 8 hours not even water intake.

Take care. Hope I have answered your question. Let me know if I can assist you further.

Regards,
Dr. Salah Saad Shoman, Internal Medicine Specialist
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Could Food Consumed Before Fasting Blood Glucose Test Show False Positive Results?

Hi, Yes, these things you ate can cause false-positive results. When we say fasting we mean total fasting for at least 8 hours not even water intake. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Salah Saad Shoman, Internal Medicine Specialist