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降钙素原是一种炎症标志物，其在多种临床感染性疾病中均显示出高度的特异性及敏感性。鉴于传统的腹膜透析相关性腹膜炎的检测手段均具有一定的局限性，国内外学者开始倾向于将降钙素原纳入腹膜透析相关性腹膜炎的诊断指标，研究表明腹膜透析相关性腹膜炎患者的血清降钙素原水平显著升高。因此，降钙素原可以作为腹膜透析相关性腹膜炎患者在诊断和治疗过程中的重要检测指标，其对腹膜透析相关性腹膜炎的指导意义值得进一步探索。“,”Procalcitonin has been clearly specified as an infection marker for many clinical diagnosis of bacterial infections with high sensitivity and specificity .In view of some certain limitations on traditional diag-nostic standards of peritoneal dialysis related peritonitis, both domestic and foreign scholars tended to intro-duce procalcitonin as one of peritoneal dialysis related peritonitis indicators .A large number of studies showed that patients suffering from peritoneal dialysis related peritonitis gained significantly higher concentra-tion of serum procalcitonin.Therefore, procalcitonin can be used as an important detection index in the diag-nosis and treatment of peritoneal dialysis related peritonitis,the guiding significance of which deserves further exploration.