| Glucose level | |
| Fasting glucose | |
| Normal | 70 to 99 |
| Pre-diabetes | 100 to 125 |
| Diabetes | 126 or higher on at least 2 tests |
| Glucose tolerance | |
| Normal | Below 140 |
| Pre-diabetes | 140 to 199 |
| Diabetes | 200 or higher on at least 2 tests |
| A1C percent | |
| A1C | |
| Normal | Below 5.7 |
| Pre-diabetes | 5.7 to 6.4 |
| Diabetes | 6.5 or higher on at least 2 tests |
