How quickly does HbA1c change?

Answered by 1 Apollo Doctors

Dr Hema Pratima

General Practitioner

MBBS
9+ Yrs

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The disadvantage of HbA1c is that it changes slowly. So any change you make to your diet, exercise or medication will take 6 weeks to show its effect, and the full impact of doing something different might not be visible for 2-3 months.

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Answered 24/07/2025

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Hi, my wife is pregnant and currently 17 weeks along. We had blood sugar and routine urine tests in March, September, and October. Blood sugar was in the normal range (76 to 77) and urine tests were normal. In November, sugar was 1+ in urine. I am worried as she has a family history of diabetes. What will be the medication during pregnancy? We are happy with our doctor as she said we need to closely track it. I am posting this for my clarification and satisfaction.

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What is a good HBA1C test result?

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I am 27 weeks pregnant, and my recent tests show HbA1c of 5.3. I also underwent an OGCT, and I am attaching the report. I am concerned about gestational diabetes and would like you to check my results and advise whether I am at risk or not.

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