| A1C (%) | eAG (mg/dL) | eAG (mmol/L) |
|---|---|---|
| 5.0 | 97 | 5.4 |
| 5.5 | 111 | 6.2 |
| 6.0 | 126 | 7.0 |
| 6.5 | 140 | 7.8 |
| 7.0 | 154 | 8.6 |
| 7.5 | 169 | 9.4 |
| 8.0 | 183 | 10.2 |
| 8.5 | 197 | 10.9 |
| 9.0 | 212 | 11.8 |
Reflects average blood glucose levels over the past 2-3 months, unaffected by daily dietary or exercise fluctuations. It is the internationally recognized "gold standard" for glucose control. For example, A1C 6.5% corresponds to an eAG of approximately 140mg/dL (7.8mmol/L), indicating that blood glucose has been at this average level over the past 3 months.
Calculated from A1C using a formula, it converts the abstract A1C value into familiar "daily glucose units" (consistent with glucose meter readings), providing a more intuitive understanding of long-term control effectiveness. For example, if a patient's daily glucose readings are 120mg/dL, combining this with eAG results helps quickly understand the relationship between long-term averages and individual measurements, assisting in adjustments to diet, exercise, or medication.
Whether A1C or eAG, maintaining levels within reasonable ranges can significantly reduce diabetes complications (such as retinopathy, nephropathy, neuropathy, cardiovascular disease, etc.). Common clinical target references:
| Population | A1C Control Target | Corresponding eAG Range (mg/dL) | Corresponding eAG Range (mmol/L) |
|---|---|---|---|
| Most diabetes patients | <7% | <154 | <8.6 |
| Elderly/High hypoglycemia risk | 7%~8% | 154~183 | 8.6~10.2 |
| Gestational diabetes | <6% (stricter) | <127 | <7.1 |
Chronic hyperglycemia continuously damages blood vessels and nerves, accelerating complication development (such as blindness, kidney failure, lower limb ulcer amputation risks), requiring urgent treatment plan adjustments (medication, diet, exercise).
May indicate high hypoglycemia risk (especially in elderly patients), or excessive dietary/medication control, easily causing dizziness, coma, or even life-threatening conditions, requiring physician evaluation and adjustment.