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Updated: Jul 11, 2026

A High-throughput Method for Measurement of Glomerular Filtration Rate in Conscious Mice
Published on: May 10, 2013
[Diabetic nephropathy: glomerular filtration rate and estimated creatinine clearance]
Joana Guimarães1, Margarida Bastos, Miguel Melo
1Serviço Endocrinologia, Diabetes e Metabolismo, Hospitais da Universidade de Coimbra, Coimbra.
Objective:
To assess in diabetic nephropathy, the accuracy of estimated creatinine clearance (calculated with the Cockroft Gault formula) and the clearance of the Tc99m-DTPA, to measure the glomerular filtration rate (GFR).
Patients And Methods:
We analysed the GFR measure by Tc99m-DTPA method and the estimated by the Cockroft Gault formula, in 21 subjects with type 1 or type 2 diabetes.
Results:
There was a strong positive correlation between the two methods but the Cockroft Gault formula underestimated the GFR.
Conclusions:
The formula gives a accurate estimates of GFR, when GFR is <100 ml/min/1,73 m2. Beside the underestimation, the formula could be used in the management of diabetic nephropathy because the repeated isotope assessments of renal function are impracticable.
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