Abstract
The accurate and timely diagnosis of COVID-19 has played a pivotal role in controlling the spread of SARS-CoV-2 and managing the pandemic. This review examines the evolution of diagnostic methods, from initial molecular and immunoassay techniques to advanced innovations. Through systematic analysis of the existing literature, regulatory frameworks, and diagnostic efficacy, this study delineates the strengths and limitations of current testing strategies. It shows the necessity of developing flexible, scalable, and rapid diagnostic tools that can adapt to viral mutations and emerging variants. The review stresses the imperative for integrated policies that bolster research, innovation, and infrastructure in preparation for future pandemics by identifying gaps in current diagnostic approaches. These insights are essential for shaping health policies that enhance global diagnostic readiness and ensure more effective responses to upcoming health crises.

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