Table 1

Definitions of maternal dysglycaemia using various diagnostic criteria

VariableDefinitionRecommending organisation
Impaired fasting glucoseA fasting plasma glucose between 6.1 and 6.9 mmol/LNICE Guidance26
Impaired glucose toleranceA fasting plasma glucose of <7.0 mmol/L or a 2-hour venous plasma glucose (after ingestion of 75 g oral glucose load) of 7.8–11.0 mmol/L.WHO diagnostic criteria recommended by NICE26
High risk of type 2 diabetesA blood glucose measurement of HbA1c ((42–47 mmol/mol) 6.0%–6.4%) or a fasting blood glucose of 5.5–6.9 mmol/LNICE Guidance26
Gestational diabetesA fasting plasma glucose level of 5.6 mmol/L or above or a 2-hour plasma glucose level of 7.8 mmol/L or above, after ingestion of 75 g oral glucose loadNICE Guidance9
Type 2 diabetesA fasting plasma glucose ≥7.0 mmol/L (126 mg/dL) or 2-hour plasma glucose ≥11.1 mmol/L in OGTT or
HbA1c>48 mmol/mol (6.4%)
WHO diagnostic criteria recommended by NICE Guidance26
  • NB: WHO- World Health Organisation, NICE- National Institute for Health and Care Excellence, HbA1c- Haemoglobin A1c.

  • NICE, National Institute for Health and Care Excellence; OGTT, oral glucose tolerance test.