COVID-19 Serological Tests: How Well Do They Actually Perform?

Area of Science:

• Infectious Diseases
• Public Health
• Diagnostic Technologies

Background:

• The rapid global spread of SARS-CoV-2 necessitates reliable diagnostic tools.
• Serological tests are vital for understanding COVID-19 epidemiology and population immunity.
• Discrepancies exist between advertised and actual performance of available serological tests.

Purpose of the Study:

• To review independent studies evaluating the performance of SARS-CoV-2 serological tests.
• To identify reliable diagnostic tests for COVID-19 detection and immunity assessment.
• To highlight the need for rigorous, independent validation of commercial tests.

Main Methods:

• Systematic review of independent studies on SARS-CoV-2 serological test performance.
• Analysis of accuracy data from various laboratory-based and point-of-care tests.
• Comparison of claimed versus actual performance metrics.

Main Results:

• Significant variability in the accuracy of marketed SARS-CoV-2 serological tests was observed.
• Several lab-based and point-of-care rapid tests demonstrated high performance levels.
• Performance discrepancies underscore challenges in test selection and implementation.

Conclusions:

• Independent evaluations are essential for ensuring the reliability of commercial COVID-19 diagnostic tests.
• High-performing serological tests can aid in controlling disease spread and managing public health measures.
• Ongoing assessment is critical to maintain confidence in diagnostic capabilities during the pandemic.