eGFR of Cockcroft-Gault, MDRD, CKD-EPI creatinine 2009, CKD-EPI creatinine cystatin C 2012, CKD-cystatin C 2012 and Le Bricon were 97.3±17.2; 87.3±13.5; 95.8±13.1; 95.3±13; 94±16 và 94.3±13.8 ml / min/1.73 m 2, respectively.