CST3 and type 1 diabetes mellitus: Cystatin C was positively correlated with HbA1cAUC, CV, type 1 diabetes duration and age (HbA1cAUC, r=0.404, p<0.01; CV, r=0.381, p=0.041; type 1 diabetes duration, r=0.342, p=0.025; age, r=0.397 p=0.008) and negatively correlated with TIR (r=–0.476, p=0.009).