Table 1 WHO definition of normoglycaemia, intermediate hyperglycaemia and T2DM [20]

Normoglycaemia

Fasting plasma glucose ≤ 6.0 mmol/l

 Impaired fasting glucose

Fasting plasma glucose ≥ 6.1 mmol/l to < 7.0 mmol/l

AND

2-h post-ingestion of 75 g glucose load plasma glucose < 7.8 mmol/l

 Impaired glucose tolerance

Fasting plasma glucose < 7.0 mmol/l

AND

2-h post-ingestion of 75 g glucose load plasma glucose ≥ 7.8 to < 11.1 mmol/l

Type 2 diabetes mellitus

Fasting plasma glucose ≥ 7.0 mmol/l

OR*

2-h post-ingestion of 75 g glucose load plasma glucose ≥ 11.1 mmol/l