Related Experiment Video
Updated: Sep 17, 2025

Detection and Quantification of Calcitonin Gene-Related Peptide CGRP in Human Plasma Using a Modified Enzyme-Linked Immunosorbent Assay
Published on: June 16, 2023
Procalcitonin in Pediatric Emergency Medicine
Niccolò Parri1, Robert H Pantell2, Enitan D Carrol3
1Meyer Children's Hospital IRCCS, Florence, Italy.
Insights
Procalcitonin (PCT) effectively identifies bacterial infections in infants, improving diagnostic accuracy. Its use reduces unnecessary procedures and antibiotic treatments, enhancing clinical care.
Area of Science:
- Biochemistry
- Clinical Diagnostics
- Pediatrics
Background:
- Procalcitonin (PCT) is evaluated as a biomarker for differentiating bacterial infections from other inflammatory conditions.
- Distinguishing bacterial infections is crucial in clinical settings, especially for febrile infants.
Purpose of the Study:
- To assess the utility of PCT as a biomarker in distinguishing bacterial infections.
- To evaluate the impact of PCT on clinical decision-making and patient outcomes in febrile infants.
Main Methods:
- Comparative analysis of diagnostic algorithms with and without PCT.
- Evaluation of PCT's sensitivity and specificity for invasive bacterial infections.
- Assessment of PCT's impact on lumbar punctures, hospitalizations, and antibiotic use.
Main Results:
- PCT demonstrates high sensitivity and markedly better specificity for invasive bacterial infections compared to traditional algorithms.
- Evidence supports PCT's role in reducing unnecessary lumbar punctures, hospitalizations, and antibiotic use in febrile infants.
- PCT accurately differentiates acute pyelonephritis from cystitis.
Conclusions:
- PCT is a valuable biomarker for diagnosing bacterial infections in febrile infants.
- Incorporating PCT into clinical practice can optimize patient management and reduce healthcare resource utilization.
- Successful implementation strategies are key to integrating PCT into routine clinical care.
Abstract:
Procalcitonin (PCT) has been increasingly evaluated as a biomarker in clinical situations where it is important to distinguish bacterial infection from viral and other inflammatory conditions. When added to other clinical and laboratory markers, PCT has comparably high sensitivity but markedly better specificity for detecting invasive bacterial infections in febrile young infants than decision algorithms not including PCT. For febrile infants, evidence shows PCT reduces unnecesary lumbar punctures (LPs), hospitalizations, and antibiotic use. PCT has also been documented to accurately distinguish between acute pyelonephritis and cystitis. Implementation strategies have succeeded in incorporating PCT into clinical care.
Related Concept Videos
Synthesis and Functions of Calcitonin
The exact mechanisms by which calcitonin operates in calcium homeostasis remain elusive, but its significance is evident in several vital...
Hormones and Bone Tissue
Hormones That Influence Osteoblasts and/or Maintain the Matrix
Several hormones are necessary for controlling bone growth and maintaining the bone matrix. The pituitary gland secretes growth hormone (GH), which, as its name implies, controls bone growth. This happens in several ways: first, it triggers chondrocyte...

