DaVita.com Kidney Education http://www.davita.com DaVita provides a complete range of dialysis treatments and support services for patients living with chronic kidney failure, also known as end stage renal disease, or ESRD. Stage 4 of Chronic Kidney Disease http://www.davita.com/kidney-disease-overview/stages of kidney disease/stage-4-of-chronic-kidney-disease/a/4751

The National Kidney Foundation (NKF) has divided chronic kidney disease (CKD) into five stages to help those who have renal disease know when they are at end stage renal failure and need dialysis. This article talks about  stage 4 of CKD.