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Which is more accurate, A1C or fasting glucose?
Both are accurate. A1C gives the control for 3 months whereas fasting glucose will give the results for that particular day.
Last updated on 29 Mar 2023
Yes, they both can be compared.
Fasting blood sugar (in the morning, before eating) should be Less than 100 mg/dL. 1-2 hours after a meal should be Less than 140 mg/dL. And 2-3 hours after eating should be Less than 100 mg/dL
The difference is A1C is the mean average for 3 months of control of blood sugar levels. Whereas fasting blood sugar levels are of the same day.
It is possible to have high A1C levels without diabetes in rare cases. Iron, folate etc can also increase HBA1C levels.
FBS, FBG, Fasting Blood Sugar
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