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Updated: Dec 11, 2025

Author Spotlight: Advancements in Multiplex Detection of Respiratory Viruses
Published on: November 10, 2023
Current approaches in laboratory testing for SARS-CoV-2
Yuzhong Xu1, Minggang Cheng2, Xinchun Chen3
1Department of Clinical Laboratory, Shenzhen Baoan Hospital, The Second Affiliated Hospital of Shenzhen University, Shenzhen, China; Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Department of Pathogen Biology, Shenzhen University School of Medicine, Shenzhen, China.
Accurate diagnosis of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is crucial for controlling the pandemic. This review examines laboratory diagnostic assays and sampling strategies to enhance Coronavirus Disease 2019 (COVID-19) detection accuracy.
Area of Science:
- Virology
- Infectious Diseases
- Diagnostic Medicine
Background:
- The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic necessitates effective diagnostic tools.
- Current diagnostic methods for SARS-CoV-2 exhibit variable sensitivity, specificity, and sample requirements.
- Timely and precise diagnosis is vital for managing Coronavirus Disease 2019 (COVID-19) spread.
Purpose of the Study:
- To comprehensively review available laboratory diagnostic assays for SARS-CoV-2 detection.
- To summarize optimal testing and sampling site selection strategies across different disease stages.
- To improve the overall diagnostic accuracy of COVID-19.
Main Methods:
- Systematic literature review of SARS-CoV-2 diagnostic assays.
- Analysis of assay characteristics including sensitivity, specificity, and detection limits.
- Evaluation of sampling site suitability based on disease progression.
Main Results:
- Diverse laboratory diagnostic techniques for SARS-CoV-2 are available, each with distinct performance profiles.
- The choice of sample source and detection method significantly impacts diagnostic outcomes.
- Specific sampling sites and testing strategies are recommended for different phases of COVID-19.
Conclusions:
- A thorough understanding of available diagnostic assays and strategic sampling is essential for accurate SARS-CoV-2 detection.
- Optimizing diagnostic approaches can significantly aid in controlling the spread of COVID-19.
- Further research into novel diagnostic technologies and standardized protocols is warranted.

