Table 1

Grades of chronic kidney disease categorised by glomerular filtration rate (after a table by Rees et al48)

Chronic kidney disease gradeGlomerular filtration rate (ml/min/1.73 m2)
Grade I>90
Grade II60–90
Grade III30–60
Grade IV15–30
Grade V<15
  • In general, serum biochemical anomalies may occur in grade II, symptoms appear in grade III, become increasingly severe in grade IV and renal replacement therapy is required in grade V.