One of the early products of the Chronic Kidney Disease in Children (CKiD) study has been an updated equation for estimating GFR in children on the basis of demographic and laboratory parameters.

The interassay coefficients of variation for the measurements of all components were under 3%. CKD-EPI equation for eGFR (ml/min): 175×serum Crn (mg/100 ml) −1.154 ×age (years) −0.203. Grubb equation ...

In patients already diagnosed with CKD, eGFR (as calculated by the abbreviated Modification of Diet in Renal Disease [MDRD] equation [5]) might provide a less crude description of the degree of ...