Objective To investigate the correlation between cystatin C( Cys C) and carotid intima-media thickness( IMT) in patients with type 2 diabetic nephropathy( DN). Methods A total of 204 type 2 diabetic patients were randomly assigned to simple diabetes group,early diabetic nephropathy group and clinical diabetic nephropathy group according to the daily urinary albumin excretion( UAE). Cys C and other biochemical indices were measured. Color Doppler examination was followed to evaluate carotid IMT. All the diab...