Table 2 WHO recommended ranges used to classify patients according to blood glucose levels [3]
From: Screening strategies for adults with type 2 diabetes mellitus: a systematic review protocol
| Diabetes | |
| Fasting plasma glucose | ≥ 7.0 mmol/L (126 mg/dl) OR |
| 2-h plasma glucose* | ≥ 11.1 mmol/L (200 mg/dl) OR |
| HbA1c | ≥ 6.5% |
| Impaired glucose tolerance (IGT) | |
| Fasting plasma glucose | < 7.0 mmol/L (126 mg/dl) AND |
| 2-h plasma glucose* | ≥ 7.8 and < 11.1 mmol/L (140 mg/dl and 200 mg/dl) |
| Impaired fasting glucose (IFG) | |
| Fasting plasma glucose | 6.1 to 6.9 mmol/L (110 mg/dl to 125 mg/dl) AND (if measured) |
| 2-h plasma glucose* | < 7.8 mmol/L (140 mg/dl) |