Multiplex Molecular Diagnostics for Gastrointestinal Pathogens

Multiplex molecular diagnostics encompass high‐throughput assays capable of detecting a wide array of gastrointestinal pathogens—bacterial, viral and parasitic—in a single test run. By integrating multiplex polymerase chain reaction (PCR) technologies with automated sample preparation and microfluidic platforms, these assays offer marked improvements in sensitivity and specificity compared with conventional culture, microscopy or antigen‐detection methods. Turnaround times have been reduced from days to hours, enabling clinicians to initiate targeted therapy, implement infection‐control measures and refine antibiotic stewardship earlier in the patient pathway. The ability to identify multiple pathogens simultaneously also sheds light on co‐infections, which may influence clinical severity and epidemiology. Commercially available panels vary in their pathogen coverage, throughput and user interface, but collectively they support a syndromic testing approach that is particularly valuable in emergency and critical‐care settings. Global adoption of multiplex platforms has the potential to standardise diagnostics across resource settings, inform public‐health surveillance and improve patient outcomes by accelerating diagnosis and optimising therapeutic interventions.

Research from Nature Portfolio

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Multiplex Molecular Diagnostics for Gastrointestinal Pathogens publication trend

The graph below shows the total number of articles in multiplex molecular diagnostics for gastrointestinal pathogens across all publications each year (not limited to Nature Index journals).

Technical terms

Multiplex PCR: A molecular technique that amplifies multiple genetic targets in a single reaction, allowing simultaneous identification of several pathogens.

Turnaround time: The interval between sample receipt and reporting of diagnostic results, critical for timely clinical decision-making.

Co-infection: The concurrent presence of two or more infectious agents in the same host, which may affect disease severity and management.

Syndromic testing: An approach whereby a predefined panel of pathogens associated with a clinical syndrome is tested in parallel, rather than relying on sequential or single‐pathogen assays.

References

1. Experience with PCR Testing for Enteric Bacteria and Viruses of Emergency Department Patients with Acute Gastroenteritis: Are There Implications for the Early Treatment of Clostridioides difficile Infection?. Antibiotics (2024).
2. Risk factors and clinical outcomes associated with multiple as opposed to single pathogens detected on the gastrointestinal disease polymerase chain reaction assay. Gut Pathogens (2024).
3. Comparison of a Rapid Multiplex Gastrointestinal Panel with Standard Laboratory Testing in the Management of Children with Hematochezia in a Pediatric Emergency Department: Randomized Controlled Trial. Microbiology Spectrum (2023).