RT-PCR tests are the most commonly-used diagnostic tests for the SARS-CoV-2 virus, which causes COVID-19.
According to the Johns Hopkins University report, the accuracy of the tests peaks at 80%.
If testing occurs on the eighth day of infectionusually three days after symptom onsetresults are more accurate.
Pedro Vilela / Stringer / Getty Images
Rashwan was not involved with the Johns Hopkins Report.
What Is a RT-PCR Test?
A false-negative result signifies a RT-PCR tests inability to detect the virus in a person with an active infection.
The researchers then compared data from RT-PCR tests to patients' history of COVID-19 exposure and onset of symptoms.
Other studies mirror this finding.
If you receive a negative result but are symptomatic, play it safe and isolate yourself until symptoms resolve.
Some test kits possess faulty reagentsthe chemicals used in tests to help detect SARS-CoV-2.
To circumvent this issue, the CDC is taking extra measures to ensure high-quality reagent manufacturing.
If a patient is positive, we know for sure to put them in isolation.
Its just important to be cognizant of the limitations of them and employ other diagnostic measures.
For the most recent updates on COVID-19, visit ourcoronavirus news page.
Centers for Disease Control and Prevention.Transcript for CDC telebriefing: CDC update on novel coronavirus.
2020;92(6):538-539. doi:10.1002/jmv.25721
