The five stages of chronic kidney disease: n Stage 1 - Kidney damage with normal or high eGFR* n Stage 2 - Kidney damage and mild decrease in eGFR* n Stage 3a - Mild to moderate decrease in eGFR* n Stage 3b - Moderate decrease in eGFR* n Stage 4 - Severe decrease in eGFR* n Stage 5 - Established renal failure * eGFR - estimated glomerular filtration rate.
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