What are the stages of chronic kidney disease (CKD)?

Updated: Jul 21, 2021
  • Author: Pradeep Arora, MD; Chief Editor: Vecihi Batuman, MD, FASN  more...
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Answer

The different stages of CKD form a continuum. The stages of CKD are classified as follows [3] :

  • Stage 1: Kidney damage with normal or increased GFR (>90 mL/min/1.73 m 2)
  • Stage 2: Mild reduction in GFR (60-89 mL/min/1.73 m 2)
  • Stage 3a: Moderate reduction in GFR (45-59 mL/min/1.73 m 2)
  • Stage 3b: Moderate reduction in GFR (30-44 mL/min/1.73 m 2)
  • Stage 4: Severe reduction in GFR (15-29 mL/min/1.73 m 2)
  • Stage 5: Kidney failure (GFR < 15 mL/min/1.73 m 2 or dialysis)

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