Procalcitonin: The marker of pediatric bacterial infection

Area of Science:

• Pediatric Infectious Diseases
• Biochemical Markers
• Clinical Diagnostics

Background:

• Systemic bacterial infections in children require timely diagnosis for effective treatment.
• Procalcitonin (PCT) is recognized as a potential early indicator for severe pediatric infections.
• Existing diagnostic methods have limitations in sensitivity and specificity.

Purpose of the Study:

• To review the utility of procalcitonin (PCT) as an early detection marker for severe, invasive bacterial infections in pediatric patients.
• To evaluate the biochemical properties and clinical applications of PCT in pediatric infections.
• To assess PCT's role as a prognostic indicator in pediatric sepsis and other bacterial infections.

Main Methods:

• Comprehensive literature review of articles from PubMed and Scopus databases.
• Examination of studies focusing on PCT's biochemical properties and clinical use in pediatric infections.
• Analysis of various available PCT detection methods and analyzers.

Main Results:

• Procalcitonin (PCT) demonstrates potential as a specific marker for bacterial infections in children.
• PCT application in neonates requires careful consideration of age-specific cut-offs, underlying conditions, and maternal antibiotic exposure, which can lead to false negatives.
• PCT correlates with infection severity, serving as a prognostic indicator for sepsis and urinary tract infections.

Conclusions:

• Procalcitonin (PCT) is a valuable supplementary tool for identifying bacterial infections in pediatric settings.
• Appropriate use of PCT can enhance diagnostic specificity compared to other immunological markers.
• PCT aids in assessing infection severity and prognosis, particularly in pediatric sepsis and UTIs.