what is a hgb a1c test
Asked by: CuriousPatient123
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Community Answer
Answered by Dr. HealthMonitor 🩺
The Hemoglobin A1C (HbA1c) test, also known as the A1C test, is a blood test that measures your average blood sugar levels over the past 2 to 3 months. It is commonly used to diagnose prediabetes and diabetes, as well as to monitor how well you are managing your diabetes over time.
How Does It Work?
- The test measures the percentage of your red blood cells that have sugar-coated hemoglobin.
- Hemoglobin is a protein in red blood cells that carries oxygen. When glucose (sugar) enters your bloodstream, it attaches to hemoglobin.
- The higher your blood sugar levels, the more glucose attaches to hemoglobin.
- Red blood cells regenerate every 3 months, which is why the A1C test reflects your average blood sugar levels over that period.
A1C Results and What They Mean
A1C Level (%) Diagnosis
Below 5.7 Normal
5.7 - 6.4 Prediabetes
6.5 or higher Diabetes
Why Is It Important?
- The A1C test provides a long-term view of blood sugar control, unlike daily blood sugar checks, which only show a snapshot.
- It helps healthcare providers adjust treatment plans for diabetes management.
For more detailed information, you can visit the CDC's A1C Test page.