Table 1.

Glomerular Filtration Rate Estimation Equations

Method	Equation	Patient Variables
Schwartz5	GFR (ml/min/1.73 m2) = k • HT ÷ Scr	k = 0.55 for children and female adolescents
		k = 0.7 for male adolescents
		HT = height (cm)
		Scr = serum creatinine concentration (mg/dl)
Leger6	GFR (ml/min) = [56.7 • WT + 0.142 • HT2] ÷ Scr	WT = weight (kg)
	GFR corrected for body surface area	HT = height (cm)
	(Mosteller method9 [WT • HT/3600]0.5)	Scr = serum creatinine concentration (µM); to convert to the value in µM, multiply value in mg/dl by 88.4
Bedside Chronic	GFR (ml/min/1.73 m2) = 0.413 • HT ÷ Scr	HT = height (cm)
Kidney Disease in Children (CKiD)7		Scr = serum creatinine concentration (mg/dl)
Counahan-Barratt8	GFR (ml/min/1.73 m2) = 0.43 • HT ÷ Scr	HT = height (cm)
		Scr = serum creatinine concentration (mg/dl)

GFR = glomerular filtration rate.