Comparison of glomerular filtration rates determined using two- and single-blood sample methods with a three-blood sample technique for 2922 paediatric studies.

Objective: Several different methods for measuring glomerular filtration rates (GFRs) have been developed in search of a more accurate and simplified technique. Currently, the main methods used are the slope-intercept and distribution volume techniques. In this work, 2922 GFR studies have been retrospectively reanalysed as two- and single-blood sample methods and compared with the three-blood sample data.