Neonatal eGFR

Estimate glomerular filtration rate for neonates using the Schwartz formula.

Disclaimer

This calculator is for clinical decision support only. Always verify with your institutional protocols.

Input Parameters

Gestational Age (weeks)

Height / Length (cm)

Serum Creatinine

mg/dLµmol/L

Stage 1Normal or High

>= 90 mL/min

Stage 2Mildly Decreased

60 - 89 mL/min

Stage 3aMildly to Moderately Decreased

45 - 59 mL/min

Stage 3bModerately to Severely Decreased

30 - 44 mL/min

Stage 4Severely Decreased

15 - 29 mL/min

Stage 5Kidney Failure

< 15 mL/min

eGFR = (0.33 x Height_cm) / Creatinine_mg/dL

If µmol/L: mg/dL = µmol/L / 88.42

26 - 68 mL/min/1.73 m² for 4-28 day neonates

References

1. Schwartz GJ, et al. New equations to estimate GFR in children with CKD. JASN. 2009.
2. KDIGO 2012 Clinical Practice Guideline for the Evaluation and Management of Chronic Kidney Disease.