TABLE 4.

Normal Serum Creatinine Concentrations at Different Ages

AgeSerum Creatinine (mg/dL) [mcmol/L]Range (mg/dL) [mcmol/L]
(<34 wk GA)
    <2 wks old0.9 [79.6]0.7 to 1.4 [61.9 to 123.8]
    ≥2 wks old0.8 [70.7]0.7 to 0.9 [61.9 to 79.6]
Term neonates (>34 wk GA)
    <2 wks old0.5 [44.2]0.4 to 0.6 [35.4 to 53.0]
    ≥2 wks old0.4 [35.4]0.3 to 0.5 [25.6 to 44.2]
2 wk to 5 y0.4 [35.4]0.2 to 0.5 [17.7 to 44.2]
5 to 10 y0.6 [53.0]0.3 to 1.0 [26.5 to 88.4]
>10 y0.9 [79.6]0.6 to 1.4 [53.0 to 123.8]
  • GA = gestational age

    From Way AF, Bolonger AM, Gambertogli JG. Pharmacokinetics and drug dosing in children with decreased renal function. In: Holliday MA, Barratt TM, Avner ED. Pediatric Nephrology. 3rd ed. Baltimore, Md: Williams & Williams; 1994:1306.