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Detection of PCT and urinary β2 -MG enhances the accuracy for localization diagnosing pediatric urinary tract

Jian Fang1, Jiangwei Luan1, Gaohong Zhu1

  • 1Department of Nephrology, Wuhan Women and Children's Health Care Center, Wuhan, Hubei, China.

Journal of Clinical Laboratory Analysis
|November 2, 2016
PubMed

Insights

Combining urinary beta 2 microglobulin (β2-MG) and procalcitonin (PCT) significantly improves the diagnosis of pediatric urinary tract infections (UTIs). This dual approach enhances accuracy in distinguishing upper from lower UTIs in children.

Area of Science:

  • Pediatric Nephrology
  • Infectious Diseases
  • Biomarker Research

Background:

  • Urinary tract infections (UTIs) are common in children, with accurate localization crucial for effective treatment.
  • Distinguishing between upper (UUTI) and lower (LUTI) UTIs is essential for clinical management.
  • Current diagnostic methods may have limitations in precise localization.

Purpose of the Study:

  • To evaluate the diagnostic precision of combined urinary beta 2 microglobulin (β2-MG) and procalcitonin (PCT) for pediatric UTIs.
  • To compare the efficacy of single biomarker diagnosis versus combined diagnosis in localizing UTIs.
  • To determine if combined biomarkers enhance diagnostic accuracy in pediatric UTI cases.

Main Methods:

  • A cohort of 85 children with confirmed UTIs was studied, categorized into UUTI (n=35) and LUTI (n=50) groups.
  • Levels of PCT and urinary β2-MG were measured in all participants.
  • Receiver operating characteristic (ROC) curve analysis was used to assess diagnostic performance.

Main Results:

  • Both PCT and urinary β2-MG levels were significantly higher in the UUTI group compared to the LUTI group.
  • Single diagnosis with PCT showed higher sensitivity (77.1%) and specificity (96.0%) than urinary β2-MG (71.4% sensitivity, 90.0% specificity).
  • The combined diagnosis of PCT and urinary β2-MG achieved a sensitivity of 88.6% and specificity of 98%.

Conclusions:

  • Both PCT and urinary β2-MG are valuable biomarkers for localizing pediatric UTIs.
  • Integrating urinary β2-MG with PCT significantly enhances the sensitivity and specificity of UTI diagnosis.
  • The combined biomarker approach offers improved diagnostic precision for UTI localization in clinical practice.
Abstract

Keywords:
childrenlocalization diagnosisprocalcitoninurinary tract infectionurinary β2-MG

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