Are rapid diagnostic tests reliable for the detection of malaria in the emergency department?
Clinical Snapshot
PICO Framework
| P — Population | Febrile adults presenting from malaria-endemic regions, assessed in the emergency department setting |
| I — Intervention | Rapid diagnostic tests (RDTs) for malaria detection |
| C — Comparator | Reference standard (implied: microscopy and/or PCR-based diagnosis, though not explicitly detailed in the abstract) |
| O — Outcomes | Diagnostic accuracy of malaria RDTs — primarily sensitivity and specificity |
Bottom Line
This short systematic review from Manchester Royal Infirmary addresses a clinically important question — the reliability of malaria rapid diagnostic tests (RDTs) in the emergency department — but provides insufficient methodological detail and no quantitative results in its abstract to permit meaningful evidence-based conclusions. Six studies were included from 138 retrieved, but no sensitivity or specificity estimates, confidence intervals, risk of bias assessments, or heterogeneity analyses are reported. The absence of QUADAS-2 appraisal, GRADE certainty ratings, and a pre-registered protocol are significant limitations. For emergency physicians in Australia and the UK managing febrile returned travellers, current best practice — supported by WHO, RACGP, and UK malaria guidelines — recommends RDTs as a rapid first-line adjunct, but never as a replacement for expert blood film microscopy. A negative RDT in a febrile patient with malaria-relevant travel history must prompt repeat microscopy. Until the full publication of this review with complete results and methodology, clinicians should not alter existing diagnostic pathways based on this abstract alone. The evidence base for malaria RDT performance in non-endemic ED settings remains an important and underserved research priority.
Key Findings
P Value: Not reported
Effect Size: Not reported in the abstract — no sensitivity or specificity estimates provided
Primary Outcome: Diagnostic accuracy of malaria rapid diagnostic tests in febrile adults from malaria-endemic regions presenting to the emergency department
Nnt Or Sensitivity: Sensitivity and specificity are the stated primary measures but no numerical values are presented in the available abstract. Clinical interpretation is therefore not possible from this source alone.
Confidence Interval: Not reported
Clinical Application
Malaria RDTs are widely available, rapid (results within 15–20 minutes), and do not require laboratory infrastructure or microscopy expertise, making them highly feasible in ED settings. However, they should not replace thick and thin blood film microscopy as the confirmatory standard, particularly for species identification and parasite density quantification. Clinical feasibility is high; interpretive limitations (particularly for low-parasitaemia P. falciparum and non-falciparum species) require clinician awareness. In Australia, malaria is not endemic but remains a significant imported disease, particularly in northern Queensland and among travellers returning from Papua New Guinea, Southeast Asia, and sub-Saharan Africa. The TGA has approved several malaria RDTs for use in Australia. The RACGP and Therapeutic Guidelines (eTG) recommend that any febrile patient with relevant travel history undergo urgent malaria testing, with blood film microscopy as the gold standard. RDTs may serve as a useful adjunct in after-hours ED presentations where expert microscopists are unavailable, but a negative RDT should not exclude malaria without confirmatory microscopy, particularly for P. vivax (which RDTs detect less reliably). This review, if its full results are published with adequate methodology, could inform ED protocols in Australian tertiary centres managing imported malaria. PBS listing of antimalarials (e.g., artemether-lumefantrine, chloroquine, primaquine) is relevant to downstream management decisions triggered by RDT results. Febrile adults presenting to emergency departments with a travel history to or residence in malaria-endemic regions. In non-endemic settings (UK, Australia), this primarily encompasses returned travellers, recent migrants, and visiting friends and relatives (VFR travellers) — a group known to carry disproportionate malaria burden and to present atypically.
Abstract
A short systematic review assessed the diagnostic accuracy of malaria rapid diagnostic tests in febrile adults from malaria-endemic regions. A database search of MEDLINE, EMBASE, Cochrane and Google Scholar returned 138 papers. Six papers met the inclusion criteria and were included in our analysis.
References
- 1.Moran, C., & Coyne, S. (2026). Are rapid diagnostic tests reliable for the detection of malaria in the emergency department? Emergency Medicine Journal. Advance online publication. https://doi.org/10.1136/emermed-2026-215905
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