RT Journal Article SR Electronic T1 Procalcitonin in detecting neonatal nosocomial sepsis JF Archives of Disease in Childhood - Fetal and Neonatal Edition JO Arch Dis Child Fetal Neonatal Ed FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP F368 OP F370 DO 10.1136/fetalneonatal-2010-194100 VO 97 IS 5 A1 Cinzia Auriti A1 Ersilia Fiscarelli A1 Maria Paola Ronchetti A1 Marta Argentieri A1 Gabriella Marrocco A1 Anna Quondamcarlo A1 Giulio Seganti A1 Francesco Bagnoli A1 Giuseppe Buonocore A1 Giovanni Serra A1 Gianfranco Bacolla A1 Savino Mastropasqua A1 Annibale Mari A1 Carlo Corchia A1 Giusi Prencipe A1 Fiammetta Piersigilli A1 Lucilla Ravà A1 Vincenzo Di Ciommo YR 2012 UL http://fn.bmj.com/content/97/5/F368.abstract AB Objective To investigate the accuracy of procalcitonin (PCT) as a diagnostic marker of nosocomial sepsis (NS) and define the most accurate cut-off to distinguish infected from uninfected neonates. Setting Six neonatal intensive care units (NICUs). Patients 762 neonates admitted to six NICUs during a 28-month observational study for whom at least one serum sample was taken on admission. Main outcome measures Positive and negative predictive values at different PCT cut-off levels. Results The overall probability of an NS was doubled or more if PCT was >0.5 ng/ml. In very-low-birth-weight (VLBW) infants, a cut-off of >2.4 ng/ml gave a positive predictive value of NS near to 50% with a probability of a false-positive diagnosis of NS in about 10% of the patients. Conclusions In VLBW neonates, a serum PCT value >2.4 ng/ml prompts early empirical antibiotic therapy, while in normal-birth-weight infants, a PCT value ≤2.4 ng/ml carries a low risk of missing an NS.