Syndromic Molecular Panels
Related: Multiplex PCR · qPCR · Sample Types and Specimen Quality · MOC - Clinical Microbiology
1. Principle
Syndromic panels are clinically bundled multiplex NAATs that test for the most relevant pathogens of a syndrome (respiratory, GI, CNS, pneumonia, joint) from one specimen with standardized interpretation software.
2. Step-by-Step Procedure (conceptual)
- Collect syndrome-appropriate specimen.
- Load cartridge / plate on closed platform (sample-to-answer common).
- Automated extraction + Multiplex PCR / Isothermal NAAT.
- Software calls each target; lab verifies flags/invalids.
- Report with comments on colonization and co-detections.
3. Interpretation
- Rule-in useful; rule-out depends on panel coverage and NPV at local prevalence.
- Co-detections need clinical adjudication.
- Resistance genes on panels ≠ full AST.
4. Clinical Use Cases
- ED/ICU rapid workups; stewardship (stop anti-MRSA/anti-Pseudomonas when panel and cultures allow).
- Outbreak screens for viral respiratory seasons.
5. Comparison with Other Methods
| Approach | Menu | Flexibility |
|---|---|---|
| Syndromic panel | Fixed | Low |
| Send-out single qPCR | Narrow | Moderate |
| Metagenomic NGS | Open | High complexity |
6. Mnemonic / Visual Aid
Syndrome → Menu → Answers on the menu only.
Active Recall
- Why can a “negative respiratory panel” miss Legionella on some kits?
- How should dual virus positives be handled?
- Name one stewardship use of rapid panels.