Fig. 2From: Tailoring the sampling time of single-sample GFR measurement according to expected renal function: a multisite auditA 3D surface plot showing the rms error in units of ml/min/1.73m2 between single-sample GFR and slope–intercept GFR plotted against GFR range and single-sample time. The colours represent increasing rms error from purple to yellow on the colour scaleBack to article page