Schwartz Formula
GFR (mL/min/1.73 m2) = k (Height) / Serum Creatinine
- k = Constant
- k = 0.33 in Preemie Infants
- k = 0.45 in Term infants to 1 year old
- k = 0.55 in Children to 13 years
- k = 0.65 in Adolescent males (Not females because of the presumed increase in male muscle mass. The constant remains .55 for females.)
- Height in cm
- Serum Creatinine in mg/dL
References:
Schwartz GJ et al, Pediatrics 58:259,1976
Schwartz et al, J Pediatr 104:849, 1984
Schwartz et al, J Pediatr 106:522, 1985
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