Clinical application of presepsin as diagnostic biomarker of infection: overview and updates
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Updated: Jan 20, 2026

Microfluidic Applications for Disposable Diagnostics
Published on: February 3, 2008
Emanuela Galliera1,2, Luca Massaccesi1, Elena de Vecchi2
1Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milan, Italy.
Abstract:
The appropriate identification of bacterial infection is the basis for effective treatment and control of infective disease. Among this context, an emerging biomarker of infection is presepsin (PSP), recently described as early marker of different infections. PSP secretion has been shown to be associated with monocyte phagocytosis and plasmatic levels of PSP increase in response to bacterial infection and decrease after antibiotic treatment, therefore it can be considered a marker of activation of immune cell response towards an invading pathogen. Different methods have been developed to measure PSP and this review will briefly describe the different clinical fields of application of PSP, ranging from intensive care to neonatal infection, to orthopedic and pulmonary infection as well as fungal infections and cardiovascular infections.
Insights
Presepsin (PSP) is an emerging biomarker for bacterial infections, reflecting immune cell activation. Its levels rise with infection and fall with antibiotic treatment, aiding diagnosis and management.
Area of Science:
- Clinical diagnostics and infectious diseases
- Biomarker discovery and validation
Background:
- Accurate identification of bacterial infections is crucial for effective treatment and disease control.
- Presepsin (PSP) is an emerging biomarker indicating early-stage infections.
- PSP levels correlate with monocyte phagocytosis and immune response to pathogens.
Purpose of the Study:
- To review the clinical applications of presepsin (PSP) as an infection biomarker.
- To summarize the role of PSP in various clinical settings and infection types.
Main Methods:
- Review of existing literature on presepsin (PSP) measurement and applications.
- Analysis of PSP's diagnostic and prognostic value in different clinical fields.
Main Results:
- Plasmatic PSP levels increase during bacterial infection and decrease following antibiotic therapy.
- PSP serves as a marker for activated immune cell response against pathogens.
- Various methods for PSP measurement have been developed.
Conclusions:
- Presepsin (PSP) shows promise as an early diagnostic marker for diverse infections.
- Its utility spans intensive care, neonatal, orthopedic, pulmonary, fungal, and cardiovascular infections.
- PSP aids in monitoring treatment response and disease progression.
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