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A 44-year-old male asked:

is smoking during fasting hours before fasting blood test increases the blood sugar in the test?

1 doctor answer1 doctor weighed in
Dr. Karl Spector
Addiction Medicine 25 years experience
It shouldn't: Smoking a cigarette before a blood test should not increase your sugar level. Thus, i would discuss with your doctor why your sugar was elevated as this may be the first sign of diabetes. Good luck!

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Last updated Jan 24, 2019
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