Test Update: Estimated Glomerular Filtration Rate (eGFR)

Effective June 24, 2019, PathGroup will begin calculating estimated glomerular filtration rate by the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equation instead of the previously utilized Modification of Diet in Renal Disease (MDRD) equation.  eGFR values are derived from patient specific factors including, serum creatinine, age, gender, and race and are used to assess the kidney’s filtering capacity.  While both equations are accurate below 60 mL/min/1/73 m2, the CKD-EPI equation provides a more accurate value above this threshold.  This change will allow PathGroup to report numeric eGFR values for results greater than 60 mL/min/1.73 m2.


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