Houston, TX
A 58-year-old male asked:
M58, my fasting blood sugar and a1c don't match, for example fasting is 150 and a1c is 5.7 why is it so? both done at one month interval.
2 doctor answers • 2 doctors weighed in

Dr. Dan Fisheranswered
Internal Medicine 29 years experience
Looks good.: A1c integrates blood sugar values over the last 60 days whereas the fbg is just a simple point in time. The discordance suggests that your blood glucose is well controlled over the "rest" of the day.
Created for people with ongoing healthcare needs but benefits everyone.
4.5k viewsAnswered >2 years ago

Dr. Stanley Schwartzanswered
Endocrinology 54 years experience
A1c reflects: Average sugar for every second for 3months
fingerstick sugar reflects blood sugar that 1 second in time :)
so often they don't match.
Created for people with ongoing healthcare needs but benefits everyone.
4.5k viewsAnswered >2 years ago
Last updated Feb 5, 2014
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