PURPOSE: Although procalcitonin (PCT) has been described as a marker of infection and inflammation, it has not been extensively studied in patients with chronic kidney disease (CKD), end stage renal disease, or renal transplant. METHODS: PCT was routinely tested in 82 (56 dialyzed patients and 28 renal transplant recipients) consecutive cases with a strong clinical suspicion of infection, during a 6-month period, in a single referral unit. RESULTS: During the study period, 58/82 cases had confirmed infections as per definition. Patients with confirmed infections had higher values for PCT [median = 2.5 ng/mL, interquartile range (IR) = 0.9-5 ng/mL] than those without (median = 0.3 ng/mL, IR = 0.1-0.5 ng/mL), p < 0.001. Overall, for a cutoff value of 0.5 ng/mL, the sensitivity of the test was 93.1 % and the specificity 78.6. CONCLUSION: Our data indicate that significantly elevated PCT concentrations offer good sensitivity and specificity for the early diagnosis of systemic bacterial infection in patients with CKD.
PURPOSE: Although procalcitonin (PCT) has been described as a marker of infection and inflammation, it has not been extensively studied in patients with chronic kidney disease (CKD), end stage renal disease, or renal transplant. METHODS: PCT was routinely tested in 82 (56 dialyzed patients and 28 renal transplant recipients) consecutive cases with a strong clinical suspicion of infection, during a 6-month period, in a single referral unit. RESULTS: During the study period, 58/82 cases had confirmed infections as per definition. Patients with confirmed infections had higher values for PCT [median = 2.5 ng/mL, interquartile range (IR) = 0.9-5 ng/mL] than those without (median = 0.3 ng/mL, IR = 0.1-0.5 ng/mL), p < 0.001. Overall, for a cutoff value of 0.5 ng/mL, the sensitivity of the test was 93.1 % and the specificity 78.6. CONCLUSION: Our data indicate that significantly elevated PCT concentrations offer good sensitivity and specificity for the early diagnosis of systemic bacterial infection in patients with CKD.
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