HbA1C a utility to predict your diabetes risk


What is HbA1C ?

A hemoglobin A1c (HbA1c) test measures the amount of blood sugar (glucose) attached to hemoglobin on RBC. An HbA1c test shows what the average amount of glucose attached to hemoglobin has been over the past three months.


Will I need to do anything to prepare myself for the test?

You don't need any special preparations for an HbA1c test.


Result interpretation

HbA1c results are given in percentages. Typical results are below.

  • Normal: HbA1c below 5.7%

  • Prediabetes: HbA1c between 5.7% and 6.4%

  • Diabetes: HbA1c of 6.5% or higher


Utility of Hemoglobin A1c in Predicting Diabetes Risk

HbA1c testing helps predict the likelihood that patients will develop diabetes in the future.

  • Patients with normal HbA1c have a low incidence of diabetes and may not require rescreening in 3 years.

  • Patients with elevated HbA1c who do not have diabetes may need more careful follow-up and possibly aggressive treatment to reduce the risk of diabetes. Patients with high-normal HbA1c may require follow-up sooner than 3 years, especially if they are significantly overweight or obese. This predictive value suggests that HbA1c may be a useful test for periodic diabetes screening.


Not only can predict Diabetes risk in a healthy population. HbA1c also can predict mortality among diabetes patients. High HbA1c variability is associated with increased risk of all-cause and cardiovascular mortality, as well as diabetic complications.


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Reference

  1. Medlineplus, US National library of medicine "Hemoglobin A1C (HbA1c) Test"

  2. David Edelman, MD" Utility of Hemoglobin A1c in Predicting Diabetes Risk" J Gen Intern Med. 2004 Dec

  3. Sharen Lee, Tong Liu "Predictions of diabetes complications and mortality using hba1c variability: a 10-year observational cohort study" Acta Diabetologica volume 58, pages171–180 (2021)

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