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24 sie 2021 · What do COVID-19 PCR test results mean? A positive test result means that it's likely that you have an infection with SARS-CoV-2. This could be due to asymptomatic infection, but if you have symptoms, then this infection is called COVID-19.
SARS-CoV-2 reverse transcriptase–polymerase chain reaction (RT-PCR) testing is highly sensitive (99%) but less specific (approximately 95%) for contagious COVID-19 and may be positive for ≥90 days after infection. Viral antigen tests have lower analytic sensitivity than RT-PCR but are more specific for contagious disease
15 kwi 2021 · SARS-CoV-2 is the novel coronavirus that causes COVID-19. The spectrum of asymptomatic, presymptomatic, and symptomatic SARS-CoV-2 transmission presents challenges for evaluating...
12 maj 2020 · Interpreting the result of a test for covid-19 depends on two things: the accuracy of the test, and the pre-test probability or estimated risk of disease before testing. A positive RT-PCR test for covid-19 test has more weight than a negative test because of the test’s high specificity but moderate sensitivity.
COVID-19 Positive (SARS-CoV-2 RNA Detected) Test Result. If your COVID-19 test was positive, this means that the test did detect the presence of COVID-19 in your nasal secretions. This result would suggest that you are currently infected with COVID-19.
This Viewpoint describes how to interpret 2 types of diagnostic tests commonly in use for SARS-CoV-2 infections—reverse transcriptase–polymerase chain reaction (RT-PCR) and IgM and IgG enzyme-linked immunosorbent assay (ELISA)—and how the results may vary over time .
29 sie 2024 · Positive viral test results indicate current infection and the person with COVID-19 should take steps to prevent spreading COVID-19 to others. Negative viral test results mean the test did not detect the virus, but this doesn't rule out that the person could have an infection.
