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Laboratory: Clinical Biochemistry
Test Name:
PEDIATRIC SCHWARTZ ESTIMATED GLOMERULAR FILTRATION RATE (PGFR) - (P)
Test Code: PGFR
Clinical Information:
For pediatric patients only.  Please note:
 
1.  This Schwartz formula (eGFR= 36.51* {ht (in cm)/SCr (in μmol/L)}), is an estimating equation only.  Results are accurate within 30% of measured GFR 80% of the time.
2.  This formula has been validated in children 1-16 years of age only, therefore outside of this range clinical correlation is required.
3.  Children with an eGFR of < 90mL/min/1.73m2 may have kidney disease.  Repeat testing is recommended.
4.  If eGFR < 30mL/min/1.73m2 , page Pediatric Nephrologist on call, via HSC Paging 787-2071.
Collection Devices:
Specimen Required: Can be ordered for pediatric patients (< 18 years of age) when a plasma creatinine is performed using a Roche enzymatic assay (WRHA sites).  Must write test code on requisition and patient height in cm.  Test cannot be performed if height is not provided.
Referral:
Requisition:
Reference Values:
Normal ≥ 90mL/min/1.732
The LIS will calculate the Schwartz eGFR.  Requires the patient's age, plasma creatinine and height in cm.
Availability:
Stat or Routine
Only available for pediatric patients (less than 18 years of age).
See Also:
More Information: