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The A1c test is used primarily to monitor the glucose control of diabetics over time. In poorly controlled diabetes, its 8.0% or above, and in well controlled patients it's less than 7.0%. It has been proven that an HbA1c level of 7.2 or less greatly reduces the risk of complications from diabetes. However, any reduction in haemoglobin A1c is a benefit.
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A1C at 7.2 % is not a diagnostic test but more useful for screening.It suggest mean sugar level around 150 mg/dl in past three months.You should further be tested for Fasting Blood sugar ,Post parandial blood sugar and GTT(glucose tolerance test) for more accurate diagnosis.
A1C at 4% - 6% is diagnostic non diabetic range.