Table 6.3

Classification of hypoglycemia*

LevelGlycemic criteriaDescription
Hypoglycemia alert value (level 1)≤70 mg/dL (3.9 mmol/L)Sufficiently low for treatment with fast-acting carbohydrate and dose adjustment of glucose-lowering therapy
Clinically significant hypoglycemia (level 2)<54 mg/dL (3.0 mmol/L)Sufficiently low to indicate serious, clinically important hypoglycemia
Severe hypoglycemia (level 3)No specific glucose thresholdHypoglycemia associated with severe cognitive impairment requiring external assistance for recovery
  • *Adapted from ref. 75.