Calculate GFR
Hi,
Our users would like to start calculating GFR based on creatinine results for children based on the Counahan-Barrett equation, basically the idea is we use a lookup table giving the median height for a child of the patient’s age, and use that to calculate GFR. We would use a modified Counahan-Barrett equation, which in SI units is GFR=(40*HT)/Cr. We have relied on the literature overview and guidelines from the US Renal organisation KDOQI.
From what I can see this equation is based on a study done by Morris et al, Arch Dis Child which was done in 1982 using a Jaffe / Alkaline picrate reaction with LKB autoanalyser. We currently use a Roche Modular creatinine method calibrated using an ID-MS traceable calibrator.
Does anyone know of or implemented a similar system but have related the calculation to more recent methods?
Cheers
Craig
Craig Webster
Consultant Clinical Scientist
Birmingham Heartlands Hospital
Birmingham
B95SS
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