OBJECTIVE To analyze the function of procalcitonin(PCT)in distinguishing different types of pathogens of bloodstream infections,so as to provide references for clinical treatment.METHODS From Nov.1st 2015 to Oct.31 th 2016,685 patients with bloodstream infections proved by positive blood culture were chosen.The different levels of PCT from different pathogens and three groups including gram-positive bacteria,gram-negative bacteria and fungi groups were analyzed.RESULTS Totally 118 patients were enrolled.The...