eGFR Creatinine

Collection Requirements

Source: blood

Container(s):

Preferred: Lithium heparin mint green gel
Acceptable: Red or Red gel

Volume: 1mL in vacutainer or 600 uL in microtainer

Special Instructions

Requires the patient's height to complete the calculation

Turn Around Time

STAT: 1 hour
Routine: 2-4 hours

Availability

STAT
Routine

Includes

Basic Metabolic Profile

Lab Processing Instructions

Specimen: plasma or serum
Spin, separate, and refrigerate

Performing Laboratory

Adele Hall, Broadway, East, Kansas, Northland

Adele Hall Lab Section

Chemistry

Instrumentation/Methodology

Vitros & calculation

Additional Information

If eGFR Creatinine is ordered a calculation will be performed with the CKiD U25 estimating equation using plasma/serum creatinine.

eGFR Creatinine = k x (height/serum creatinine), with height in meters
- For males, k is calculated as:
  - For 1 to <12 years old: 39.0 x 1.008^(age-12)
  - For 12 to <18 years old: 39.0 x 1.045^(age-12)
  - For 18 to 25 years old: 50.8
- For females, k is calculated as:
  - For 1 to <12 years old: 36.1 x 1.008^(age-12)
  - For 12 to <18 years old: 36.1 x 1.023^(age-12)
  - For 18 to 25 years old: 41.4
- For patients <1 year of age eGFR will not be reported as equations are not validated for that age group.

Reference Ranges

90 mL/min/1.73 m² or higher