If your average blood sugar (estimated average glucose or eAG) is 140 mg/dL, your A1C is 6.5%.
Understanding your A1C and eAG values is crucial for managing blood sugar levels and overall diabetes care. The A1C test provides a snapshot of your average blood sugar over the past two to three months, while eAG is a calculated value that translates your A1C percentage into a more familiar blood glucose unit (mg/dL or mmol/L), making it easier to compare with daily blood sugar readings.
A1C and Estimated Average Glucose (eAG) Conversion
The relationship between A1C and eAG is well-established and helps both individuals and healthcare professionals interpret blood sugar control. The following table illustrates common A1C percentages and their corresponding eAG values in mg/dL and mmol/L:
| A1C (%) | eAG (mg/dL) | eAG (mmol/L) |
|---|---|---|
| 6.0 | 126 | 7.0 |
| 6.5 | 140 | 7.8 |
| 7.0 | 154 | 8.6 |
As shown, an average blood sugar of 140 mg/dL directly correlates to an A1C of 6.5%.
Why These Numbers Matter
- A1C is a widely used diagnostic tool for diabetes and a key indicator for long-term blood sugar control. It measures the percentage of hemoglobin in your red blood cells that is coated with sugar (glycated). A higher A1C indicates higher average blood sugar levels.
- eAG provides a more intuitive understanding of your A1C by converting it back into the units you typically see on a home glucose meter. This allows for easier comparison between your long-term average and your day-to-day blood sugar readings.
Key Considerations
- Target Ranges: Healthcare providers typically set A1C targets based on individual health factors. For many adults with diabetes, a common A1C target is often less than 7%. However, personalized targets may vary.
- Regular Monitoring: While A1C provides a long-term average, regular self-monitoring of blood glucose (SMBG) or continuous glucose monitoring (CGM) provides real-time insights into how food, exercise, and medication affect your blood sugar levels throughout the day.
- Lifestyle Impact: Diet, physical activity, and medication adherence all significantly influence your average blood sugar and, consequently, your A1C.
For more information on A1C and eAG conversions, you can consult resources from reputable organizations like the American Diabetes Association.
