The National Kidney Foundation and the Kidney Disease Outcomes Quality Initiative define chronic renal disease as the structural or functional renal tissue damage lasting for over three months, manifested by structural or functional abnormalities, or by a drop in the glomerular filtration rate less than 60 ml/kg/1.73 m.
The National Kidney Foundation y la Kidney Disease Outcomes Quality Initiatiue definen a la enfermedad renal crónica como el daño estructural o funcional del tejido renal que perdura durante más de 3 meses, manifestado por anormalidades estructurales o funcionales, o la disminución de la TFG por debajo de 60ml/kg/l,73m'.