Table 2 WHO recommended ranges used to classify patients according to blood glucose levels [3]

 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%

 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)

 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)