Diagnosis of Diabetes

  • If there are clear cut symptoms, a random glucose of greater than or equal to 11.1 mmol/L
  • two separate fasting glucose >7mmol are diagnostic of diabetes
  • Oral glucose tolerance test is the gold standard but fasting glucose is an alternative (75mg oral glucose at two hours glucose is ≥11.1
  • HBA1c more than 6.5% – 48mmol/mol



  • Fasting glucose 6.1 – 6.9 is impaired fasting glycaemia