GFR Estimation Using Standardized Serum Cystatin C in Japan

Recently, the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) developed glomerular filtration rate (GFR)-estimating equations based on standardized serum cystatin C (CKD-EPIcys) and standardized serum creatinine plus standardized serum cystatin C (CKD-EPIcr-cys). We developed new GFR-estimating equations based on standardized cystatin C for a Japanese population and compared their accuracy with the CKD-EPI equations.