Analytical Performance of COVID-19 Detection Methods (RT-PCR): Scientific and Societal Concerns.

Area of Science:

• Virology
• Epidemiology
• Medical Diagnostics

Background:

• Effective management of the SARS-CoV-2 pandemic necessitates reliable screening and diagnostic tools.
• Current RT-PCR based assays are widely used but exhibit significant limitations, including false-positive and false-negative results.
• Pre-analytical factors and time-dependent sensitivity issues further compromise the accuracy of existing RT-PCR tests.

Purpose of the Study:

• To critically evaluate the limitations and future prospects of available RT-PCR techniques for COVID-19.
• To assess the performance of RT-PCR in providing reliable epidemiological and clinical information.
• To highlight the need for improved analytical tests for accurate identification of infectious individuals.

Main Methods:

• Critical investigation of existing literature on RT-PCR performance for SARS-CoV-2.
• Analysis of reported false-positive and false-negative rates associated with RT-PCR testing.
• Evaluation of pre-analytical biases and time-dependency of RT-PCR sensitivity.

Main Results:

• Current data raise concerns about the utility of RT-PCR swabs for screening SARS-CoV-2.
• A significant number of false-positive and false-negative results undermine the reliability of RT-PCR data for decision-making.
• RT-PCR sensitivity is notably time-dependent and influenced by pre-analytical variables.

Conclusions:

• RT-PCR tests, as currently implemented, are questionable for widespread screening in tracking the SARS-CoV-2 pandemic.
• The high rate of inaccurate results compromises the trustworthiness of epidemiological data derived from RT-PCR.
• There is an urgent need to refine analytical methods to accurately detect individuals capable of transmitting the virus, thereby aiding outbreak control.