Chronic Kidney Disease is defined as a permanent and irreversible reduction in kidney function. Over twenty million Americans have some degree of kidney disease.

1. The buttons to the left provides useful definitions, vocabulary and links to other sites for patients with kidney disease.

2. The link below provides the MDRD calculator for kidney function.

3. The chart below the MDRD link defines the stages of Chronic Kidney Disease as developed by the National Kidney foundation in their K/DOQI guidelines.