Morris et al estimated the glomerular filtration rate (GFR) in children based on plasma creatinine and body height. The authors are from Guy's Hospital in London.


Patient selection: age 2 to 14 years



(1) plasma creatinine in µmol/L

(2) height in cm


estimated GFR in mL per min per 1.73 square meter =

= 40 * (height in cm) / (plasma creatinine)



• 1.73 square meter is the body surface area (BSA) for an adult. Perchance some other metric might be more applicable to a pediatric patient.



• The actual GFR was measured using disappearance of 51-Cr-EDTA.

• The formula is most accurate in children with a GFR < 80 mL per min per 1.73 square m BSA.

• The formula was able to detect a change in GFR of 9 mL per min per 1.73 square m BSA.


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