He underwent euglycemic clamp test for valuation of insulin sensitivity and pancreatic beta cell function when his condition quickly stabilized in three days. The glucose disposal ratio (GDR) during the steady-state of euglycemic clamp test was 5.62 mg/kg/min and glycemic metabolism (M) value was 2.87 mg/kg/min during hyperglycemic clamp test, which means there were low insulin sensitivity and extremely deficient in insulin secretion.