Abstract
Biochemical detection of neutrophils in peritoneal effluents by Cytur-test® has been advocated as a fast and reliable bedside test when peritonitis is suspected in patients on continuous ambulatory peritoneal dialysis. The Cytur-test developed a light blue colour when the neutrophil count exceeded 108 I−1 in the dialysis effluents, while in urine the same reaction is seen at a neutrophil concentration of 107 I−1. The Cytur-test was inhibited by glucose at 25 g I−1 and by albumin at 10 g I−1. However, the median (range) concentrations of glucose and albumin of 60 dialysis effluents was 1.8 g I−1 (0.9-10.6 g I−1) and 1.1 g I−1 (0.3-5.2 g I−1) respectively. Thus, presence of glucose and albumin cannot be the only reason of the reduced reactivity of the Cytur-test in dialysis effluents when compared with urine.
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