CST3 and chronic kidney disease: "Elevated GFR" obese study participants, who developed CKD during the follow-up period, did not differ in peripheral blood morphology, serum creatinine, cystatin C, uric acid, urea, Na, K, Ca, Mg, total cholesterol, triglycerides, HDL, fasting glucose, TSH, fT3, fT4, liver enzymes, total protein, CRP, adiponectin as well as 24 h urine for albumin, Gal-3, megalin, NGAL, or TIMP2 values from their peers who did not develop CKD.