Bland-Altman comparison of plasma clearance GFR by single Iohexol bolus method and the experimental method (CILDI). Central solid lines are bias and outer dashed lines are limits of agreement, n = 17. A) Difference is measured in mL/min/1.73 m2. Bias = 2.2 mL/min/1.73 m2, SD of bias = 5.3 mL/min/1.73 m2, 95% limits of agreement from −8.2 to +12.6 mL/min/1.73 m2, B) Difference is measured as percentage difference in GFR. Bias = 3.5%, SD of bias = 6.8%, 95% limits of agreement from −9.8 to +16.8%.