An overview of point-of-care testing for infections in critically ill patients

Expert Rev Mol Diagn. 2024 Mar;24(3):193-200. doi: 10.1080/14737159.2024.2322146. Epub 2024 Feb 27.

Abstract

Introduction: Molecular diagnostic systems for point-of-care (POC) testing are nowadays routinely used and are part of many labs. Although often intended for bedside use outside of the microbiology lab, there is still room for expansion.

Areas covered: This review discusses the two techniques that are currently the most widespread, real-time polymerase-chain reaction (RT-PCR) and loop-mediated isothermal amplification (LAMP). An overview is provided of the various manufacturers and products as well as the evidence and current use in clinical practice. The article further sheds light on some newer techniques, such as CRISPR-based diagnostics and lab-on-a-chip, which are still in development.

Expert opinion: With many new platforms and techniques still in the pipeline and their potential currently not yet fully exploited, we expect the use of molecular POC testing to increase in the years to come. However, even when used in hospital - in lab, the main advantages of the tests being fast and easy to perform already provide significant benefits in terms of patient outcome.

Keywords: CRISPR-based diagnostics; POC testing; lab-on-a-chip; loop-mediated isothermal amplification (LAMP); real-time polymerase chain reaction (RT-PCR).

Publication types

  • Review

MeSH terms

  • Critical Illness*
  • Humans
  • Molecular Diagnostic Techniques / methods
  • Nucleic Acid Amplification Techniques / methods
  • Point-of-Care Systems
  • Point-of-Care Testing*
  • Real-Time Polymerase Chain Reaction
  • Sensitivity and Specificity