what does an a1c test measure
Asked by: GlucoseWatcher
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Community Answer
Answered by Dr. SugarSense 🩺
The A1C test, also known as the hemoglobin A1C or HbA1c test, measures your average blood sugar (glucose) levels over the past 2 to 3 months. Here's how it works:
- Hemoglobin and Glucose: When sugar enters your bloodstream, it attaches to hemoglobin, a protein in your red blood cells.
- Glycated Hemoglobin: The A1C test measures the percentage of your red blood cells that have sugar-coated hemoglobin.
- Time Frame: Since red blood cells regenerate roughly every 3 months, the A1C test provides a long-term view of your blood sugar levels.
Key Points:
- Normal: Below 5.7%
- Prediabetes: 5.7% to 6.4%
- Diabetes: 6.5% or above
The A1C test is a crucial tool for diagnosing prediabetes and diabetes, as well as monitoring how well your diabetes is being managed over time.