1951640 eGFRcr-cys eGFR based on both creatinine and cystatin C 1 1951639 eGFRcr-cys eGFR based on creatinine and cystatin C levels 1 1951634 eGFRcr-cys eGFR calculated using creatinine and cystatin C 1 1951633 eGFRcr-cys eGFR creatinine-cystatin C 1 1951632 eGFRcr-cys eGFR estimated using a combined creatinine-cystatin C equation 1 1951641 eGFRcr-cys eGFR SCr-cysC 1 1951638 eGFRcr-cys eGFRcys, and their combination 1 1951637 eGFRcr-cys estimated GFR based on creatinine and Cys-C 1 1951636 eGFRcr-cys estimated glomerular filtration rate from creatinine and cystatin C levels 1 1951635 eGFRcr-cys estimated glomerular filtration rate from cystatin C and creatinine 1 1951631 eGFRcr-cys estimated glomerular filtration rate using the creatinine-cystatin C equation 1