Molecular Point-of-Care Testing for Infectious Diseases and Antimicrobial Resistance: Integrated Biosensing Technologies, Evidence Maturity, and Clinical and One Health Translation
www.frontiersin.org
Nov. 3, 2026, 1:35 p.m.
Molecular point-of-care testing (POCT) offers promise for rapid infectious-disease diagnosis to guide isolation, referral, and treatment decisions. This critical review examines POCT as an integrated biosensing system, integrating CRISPR-Cas recognition, isothermal amplification, microfluidic sample handling, nanomaterial-assisted preparation, and smartphone readout with considerations for contamination control, matrix tolerance, multiplexing, calibration, and reagent stability. The authors propose a five-domain framework evaluating mechanistic feasibility, analytical characterization, clinical accuracy, usability and operations, and clinical utility and implementation, applied to respiratory infections, sexually transmitted infections, and antimicrobial-resistance testing. While clinically evaluated cartridge systems demonstrate stronger diagnostic evidence than emerging prototypes, randomized trials show rapid pathogen identification does not necessarily reduce antibiotic prescribing, highlighting the distinction between genotypic resistance detection and phenotypic susceptibility testing. The One Health framework examines transferable engineering constraints in foodborne-pathogen detection, water surveillance, and antimicrobial-exposure monitoring. Key implementation priorities include internal process controls, transparent invalid-result reporting, prospective real-world evaluation, reproducible manufacturing, affordability, secure connectivity, and explicit linkage between test results and appropriate clinical actions.