A 46-year-old member asked:
What are the causes of normal a1c and high fasting glucose?
1 doctor answer • 2 doctors weighed in
Endocrinology 43 years experience
Several causes: The correlation between a1c and FBS is not perfect. A1c is like a glu average. If you have frequent hypoglycemia, then that may be "balancing" the high glu. Another possibility is a hemoglobinopathy. There are many causes of abnormal hemoglobin, most common is sickle trait, which cause no symptoms but mess up the a1c. An alternate to the a1c is a measure of fructosamine.
5.2k viewsReviewed >2 years ago
Last updated Jun 10, 2014
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