Table 4.

Normal values for renal variables by age

AgeMean Serum Creatinine (mg/dl) (58)Mean Estimated GFR (ml/min per 1.73 m2) (58)Mean Kidney Length (cm) (44)Resistive Index (47,59,60)
Preterm neonate0.911Depends on gestational age (61,62)0.8–0.9
Term neonate0.5394.50.7–0.8
1 yr0.31036.60.7–0.8
5 yr0.41278.1<0.7
10 yr0.61279.2<0.7
15 yr0.912710.9<0.7
  • Numbers in parentheses are references.