How does the A1c test identify glucose levels?

Answered by 1 Apollo Doctors

Dr Hema Pratima

General Practitioner

MBBS
Fellowship in Diabetes Mellitus
9+ Yrs

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The A1C test measures the amount of hemoglobin with attached glucose and reflects your average blood glucose levels over the past 3 months

Dr. Hema Suggests...

Take a LIPOPROTEIN A (LP-A) Test or Take a NX GEN WHOLE EXOME SEQUENCING - THERMOFISHER Test

Book LIPOPROTEIN A (LP-A) Test Book NX GEN WHOLE EXOME SEQUENCING - THERMOFISHER Test

Answered 24/07/2025

More HBA1C (GLYCATED HEMOGLOBIN) Health Queries

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My question is about whether labs have different reference values because of the reagents used in processing. My lab report shows an A1C value of 6, and the lab normal range shows up to 6.2. I understand that normal values are usually less than 5.7, but in this case, can 6 be considered normal since the lab range shows up to 6.2? I understand fasting is high, but please restrict your answer to differences in lab normal ranges.

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I did the HBA1C, OGTT, and TSH tests as recommended by a doctor at Cloudnine. My report shows HBA1C 9.7, average glucose 231.69, fasting sugar 191 high, 1 hour post load 326 high, 2 hours post load 398 high, and TSH 7.325 high. These values are higher than normal. What would be your suggestion regarding diet or medicines?

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Please find the attached image of my blood report HBA1c. Please tell me whether it is normal or not? If not, specify what to do?

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Disclaimer: Answers on Apollo 247 are not intended to replace your doctor advice. Always seek help of a professional doctor in case of an medical emergency or ailment.