INS and type 2 diabetes mellitus: AUC (mean) insulin was lowest in NG-NW (38.14 nmol/L), followed by IFG (54.79 nmol/L), NG-O (79.17 pmol/L), IGT+IFG (96.19 nmol/L), IGT (101.06 nmol/L), and T2D (213.84 nmol/L).