Both eGFR ( MDRD ) and eGFR ( CKD-EPI-Creat + CysC ) had high percentage ( @ % and @ % , respectively ) of estimates falling within @ % of mGFR versus estimates by eGFR ( CKD-EPI-Creat ) and eGFR ( CKD-EPI-CysC ) equations ( @ % and @ % , respectively ) .