Pathology > eGFR displays your data in mg/ml as a breakdown of:
Stage 1: >= 90
Stage 2: >=60 to <90
Stage 3a: >=45 to <60
Stage 3b: >=30 to <45
Stage 4: >=15 to <30
Stage 5: <15
The eGFR value is obtained through pathology results or via calculation (see below). Where both are available the latest value is displayed in the graph.
The data is displayed as a pie chart. Functions available are as described for Allergies at the beginning of this chapter.
eGFR (ml/min) is calculated using the CKD-EPI formula from serum creatinine measurement (in µmol/L), age and gender.
This formula is
where SCr is serum creatinine in mg/dL (convert from µmol/L to mg/dL by dividing by 88.4)
k is 0.7 for females and 0.9 for males
a is -0.329 for females and -0.411 for males
min indicates the minimum of SCr/k or 1, and max indicates the maximum of SCr/k or 1
The CKD-EPI formula is for age >= 18.
For children the Schwartz equation is used:
GFR (mL/min/1.73 m2) = (0.41 x Height) / (Serum creatinine / 88))
eGFR Mappings with Clinical Systems
The eGFR and creatinine mappings are provided in the 'General Data Mappings' Appendices under Measurements for each clinical application.