In this protocol, we plan to prospectively recruit subjects with chronic kidney disease or end stage kidney disease on dialysis. We will obtain stool, blood, urine (if possible), and peritoneal fluid (if on peritoneal dialysis) from the subjects on a regular basis and we will correlate whether the microbiome in these biospecimens are associated with and/or predictive of bacteremia and other complications in chronic kidney disease and end stage kidney disease. Recent evidence suggests that the microbiota may be related to infectious complications like bacteremia