HbA1c Test

HbA1c Test

HbA1c is Glycated Haemoglobin that is formed when excess sugar in the blood binds to the haemoglobin protein, present inside red blood cells.

HbA1c Test

HbA1c quantifies the % of glycated haemoglobin molecules in the blood. This test is considered as a gold standard for determining chronic hyperglycaemia and gives approximate values of average blood glucose levels for preceding 8 to 12 weeks.

Normal HbA1C levels

The normal range of HbA1c levels is 4% to 5.6% in people without diabetes.

Purpose of the HbA1C test

It is recommended that HbA1c should be checked in persons with diabetes

  • At least twice a year, if sugar control is good.
  • Every 3 months if target levels are not achieved, or there is a change in treatment.

Procedure of Test

  • A blood sample (a few ml of blood) is taken from the arm for HbA1c assay.
  • It can be carried out at any time of the day.
  • It does not require fasting.

Result and Interpretation

HbA1c levels between 5.7% and 6.4% indicate the state of increased blood sugar (Prediabetes).

HbA1c levels of 6.5% or higher reflect Diabetes.

HbA1c and Sugar Levels Chart

Diagnosis HbA1c Estimated Average Glucose Levels (mg/dl) Fasting Blood Glucose (mg /dl)
Normal Below 5.7% <117mg/dl 70-100
Prediabetes Between 5.7% and 6.4 % Between 117 to 137 101-125
Diabetes 6.5% or higher 139.8 or higher 126 or higher

Reference: American Diabetes Association .

The target of treatment intervention is to keep HbA1c levels below 7% (well-controlled Diabetes).

FAQ

The normal range of HbA1c levels is 4% to 5.6%

HbA1c refers to glycated haemoglobin, which is formed when excess glucose in the blood is attached to the haemoglobin.

High HbA1c implies there is a high risk of developing complications associated with Diabetes.

About the Author

Dr Aarti Nehra is an MBBS graduate and pursued Masters of Medical Science and Technology from IIT Kharagpur. She has worked as a consultant to provide services across the medical device and pharmaceutical industry. A cross-domain expert with experience in clinical practice, clinical marketing, competitive intelligence, market strategy and analysis, statistical analysis, and medical research.
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