Rapid diagnostic tests (RDTs) have transformed infectious disease management by enabling timely identification of pathogens at the point of care. These tests play a crucial role in outbreak control, antimicrobial stewardship, disease surveillance, and clinical decision-making. Despite their advantages, concerns remain regarding diagnostic accuracy compared with conventional laboratory methods.

Objective

To evaluate the diagnostic accuracy of rapid infectious disease tests and assess their effectiveness in clinical practice and public health settings.

Methods

A cross-sectional analytical study was conducted among 1,500 patients presenting with symptoms suggestive of infectious diseases. Rapid diagnostic tests for COVID-19, influenza, malaria, dengue fever, streptococcal pharyngitis, and hepatitis B were compared with gold-standard laboratory methods including polymerase chain reaction (PCR), culture, enzyme-linked immunosorbent assay (ELISA), and microscopy. Diagnostic performance measures included sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and overall accuracy.

Results

Rapid diagnostic tests demonstrated overall sensitivity ranging from 83.2% to 97.4% and specificity ranging from 89.1% to 99.1%. Malaria and COVID-19 rapid tests showed the highest diagnostic accuracy. Rapid testing significantly reduced time to diagnosis and facilitated earlier treatment initiation. Diagnostic performance varied according to disease type, specimen quality, and timing of testing.

Conclusion

Rapid infectious disease tests provide reliable diagnostic information and significantly improve healthcare efficiency. While confirmatory laboratory testing remains necessary in selected cases, rapid diagnostics represent essential tools for modern infectious disease management and public health response.