Peritoneal dialysis utilises a membrane inside the body as a filter during dialysis as a way of removing waste and excess water from the body of patients with chronic renal failure. Microbiology will perform microscopy, isolation, identification and susceptibility of any organism likely to be pathogenic. Microscopy results are available within 4 hours of receipt of sample, negative culture results will be issued at 48 hrs, positive cultures 2-3 days.
A complication from peritoneal dialysis is infection characteristed by fever, abdominal discomfort and pain. Peritonitis can be defined as presence of a cloudy peritoneal dialysate containing >100 WBC per µl, presence of organisms in fluid as seen on Gram stain or isolated on culture. Cloudy dialysis may be due to other non-infective causes, it is important to exclude infection.