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I am 49, female. My FBS is 97, but my HbA1c is 6.89. Why?

This Premium Q&A, reviewed and published, features a real conversation between an iCliniq user and a physician.

Patient's Query

Hello doctor,

I got my blood test results today. My fasting blood sugar is 97 mg/dL. But, my HbA1c is 6.89 with mean blood glucose at 144. I am going through premenopause and I am 49 years old female.

Please help.

Answered by Dr. Saumya Mittal

Education:

MBBS

Professional Bio:

Dr. Saumya Mittal is a Family Physician with specialization in Diabetology and Internal Medicine. He is also trained in the management of diabetes and Vitamin D deficiency. His expertise includes managing diabetes, metabolic disorders, chronic diseases, and complex medical conditions with a strong focus on preventive healthcare. Dedicated to patient well-being, he combines evidence-based medicine with a personalized approach to improve long-term health outcomes.

Additional Credentials

  • Certified in Management of Diabetes

  • Diploma in Vitamin D Deficiency and Treatment

This doctor is not available for online consultations on the platform anymore.

Hello,

Welcome to icliniq.com.

I have read your message. I think I can help you.

This suggests a possible impaired glucose tolerance (IGT). I would recommend getting an oral glucose tolerance test (OGTT). While many consider it outdated, I think it would yield a diagnosis in your case. Upload the report for further suggestions.

Meanwhile, start a diabetic diet. Avoid sugar and a high-carbohydrate diet.

I hope this helps.

Thank you.

Patient's Query

Hello doctor,

Thank you for the reply.

Over the last three months, I have been pretty stressed since my daughter got married 33 days ago. Will this have any effect on the test? Does this mean that I am diabetic or have a high disposition to diabetes?

Answered by Dr. Saumya Mittal

Education:

MBBS

Professional Bio:

Dr. Saumya Mittal is a Family Physician with specialization in Diabetology and Internal Medicine. He is also trained in the management of diabetes and Vitamin D deficiency. His expertise includes managing diabetes, metabolic disorders, chronic diseases, and complex medical conditions with a strong focus on preventive healthcare. Dedicated to patient well-being, he combines evidence-based medicine with a personalized approach to improve long-term health outcomes.

Additional Credentials

  • Certified in Management of Diabetes

  • Diploma in Vitamin D Deficiency and Treatment

This doctor is not available for online consultations on the platform anymore.

Hello,

Welcome back to icliniq.com.

If the OGTT comes out to be positive, then you may be a diabetic. As of now, I would suggest that you have a predilection for diabetes. However, a high-calorie diet may have influenced HbA1c (glycated hemoglobin), in which case, OGTT should be normal. Stress as such would not cause this.

I hope this helps.

Thank you.

Medically reviewed by Dr. K. Shobana
Published At August 14, 2018
Reviewed At December 18, 2025

Education:

MBBS

Professional Bio:

Dr. Saumya Mittal is a Family Physician with specialization in Diabetology and Internal Medicine. He is also trained in the management of diabetes and Vitamin D deficiency. His expertise includes managing diabetes, metabolic disorders, chronic diseases, and complex medical conditions with a strong focus on preventive healthcare. Dedicated to patient well-being, he combines evidence-based medicine with a personalized approach to improve long-term health outcomes.

Additional Credentials

  • Certified in Management of Diabetes

  • Diploma in Vitamin D Deficiency and Treatment

This doctor is not available for online consultations on the platform anymore.

Education:

BDS

Professional Bio:

Dr. K. Shobana is a Dental Surgeon specializing in oral health and dental care. She is skilled in preventive dentistry and provides oral hygiene education. She can do restorative treatments such as fillings and crowns. She can handle periodontal problems such as gum diseases and periodontitis. She can do root canal treatment.

This doctor is not available for online consultations on the platform anymore.

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HbA1c and FBS Discrepancy Decision Helper

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This quick check helps you understand potential reasons for a difference between your fasting blood sugar (FBS) and HbA1c results.

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Education:

MBBS

Professional Bio:

Dr. Saumya Mittal is a Family Physician with specialization in Diabetology and Internal Medicine. He is also trained in the management of diabetes and Vitamin D deficiency. His expertise includes managing diabetes, metabolic disorders, chronic diseases, and complex medical conditions with a strong focus on preventive healthcare. Dedicated to patient well-being, he combines evidence-based medicine with a personalized approach to improve long-term health outcomes.

Additional Credentials

  • Certified in Management of Diabetes

  • Diploma in Vitamin D Deficiency and Treatment

This doctor is not available for online consultations on the platform anymore.

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