Schwartz Pediatric

Pediatric2009Recommended

Bedside equation for children and adolescents

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Calculate Schwartz

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For educational and clinical reference use. Interpret results in clinical context.

Formula

eGFR=41.3×heightScr (height in meters)\text{eGFR} = 41.3 \times \frac{\text{height}}{S_{cr}} \text{ (height in meters)}

Formula constants

SymbolDescriptionValue
41.3Bedside coefficient (CKiD 2009, enzymatic creatinine)
HeightinputPatient heightmeters
ScrS_{cr}inputSerum creatinine (IDMS-standardized)mg/dL

Required inputs

HeightCreatinine
Optional:Age

Validated age range

1 to 17 years

Limitations

  • Developed primarily from children ages 8 to 15
  • Reserved for quick, urgent estimates
  • Less accurate than CKiD U25 equations
  • Requires accurate height measurement

Clinical notes

  • 2009 CKiD 'bedside' equation for children
  • For children ages 1-17 with mild-to-moderate CKD
  • Requires accurate height measurement
  • Uses enzymatic creatinine coefficient
  • Quick, urgent estimates during routine clinical care

References

  • [1]Schwartz GJ, Muñoz A, Schneider MF, et al. New equations to estimate GFR in children with CKD. J Am Soc Nephrol. 2009;20(3):629-637. doi:10.1681/ASN.2008030287

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