LEP and type 2 diabetes mellitus: Leptin SR level was significantly higher in T2DM patients than in controls (5.8 ± 1.6 and 4.8 ± 1.3 respectively, P=0.001) while the difference was not significant for leptin (32.2 ± 19.5 and 30.6 ± 19.8 respectively, P=0.331).