CST3 and diabetic neuropathy: Significant differences between these groups were observed in several variables, including duration of T2DM, duration of hypertension, SBP, BMI, presence of DR, diabetic neuropathy, DF, levels of S-HbA1c [%], fasting glucose (S-fasting glucose), urea (S-urea), cystatin C (S-cystatin C), creatinine (S-creatinine), triglycerides (S-TGS) and the urine albumin/creatinine ratio (U-albumin/creatinine ratio).