Objectives: Compare GFR estimates (eGFR) calculated by formulas (CG, CGI, MDRD) and creatinine clearance (CrCl), in subgroups based on sex, age, BMI and serum creatinine (Cr). Design and methods: eGFR is calculated with Cockgroft-Gault (CG), CG corrected for ideal or lean weight (CGI), and Modification of Diet in Renal Disease (MDRD) formulas using a compensated kinetic Jaffé method. Comparison of means and correlations relative to CrCl is done with 666 male and female adult subjects in different subgroups. Results: Comparatively to CrCl, most subgroups are best correlated with MDRD, especially with high Cr. However, in men < 65 years, a factor of 222, instead of 186 in MDRD formula, is better. Conclusions: eGFR from MDRD formula, modified for men < 65 years, is better correlated to CrCl. © 2006 Elsevier Inc. All rights reserved.
Planet, G. (2007). Comparison of creatinine clearance estimates with routine measured clearance. Clinical Biochemistry, 40(1–2), 124–127. https://doi.org/10.1016/j.clinbiochem.2006.08.001