to define glycemic thresholds for activation of glucose counterregulatory systems and for symptoms of hypoglycemia , we measured these during stepped reductions in the plasma glucose concentration ( in six 10-mg/dl hourly steps ) from 90 to 40 mg/dl under hyperinsulinemic clamp conditions , and compared these with the same measurements during euglycemia ( 90 mg/dl ) under the same conditions over 6 h in 10 normal humans .
C0017725
glucose
C0020615
hypoglycemia