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Apr 15, 2021 · SARS-CoV-2 is the novel coronavirus that causes COVID-19. ... (95% CI, 97.3% to 99.5%). 13 The range of sensitivity was 68% to 100%. The same Cochrane review included eight evaluations of five ...
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 .
- Nandini Sethuraman, Sundararaj Stanleyraj Jeremiah, Akihide Ryo
- 2020
May 12, 2023 · Amplifying those nucleic acids enables NAATs to detect very small amounts of SARS-CoV-2 RNA in a specimen, making these tests highly sensitive for diagnosing COVID-19. In other words, NAATs can reliably detect small amounts of SARS-CoV-2 and are unlikely to return a false-negative result of SARS-CoV-2.
Mar 18, 2024 · CDC provides general information on sensitivity, specificity, and positive and negative predictive values for antigen tests and antibody tests. For information on a specific test, refer to FDA’s website. Table 1 summarizes some characteristics of NAATs and antigen tests to consider for a testing program.
Dec 20, 2023 · For diagnosing current SARS-CoV-2 infection, the CDC recommends using a specimen from the upper respiratory tract (e.g., nasal, nasopharyngeal). 5 Testing lower respiratory tract specimens is also an option in certain circumstances (e.g., in those receiving mechanical ventilation).
Viral transport medium acceptable for collection of influenza specimens in 1 mL or 3 mL volumes can be used to transport swabs for COVID-19 testing. For swabs in saline: OP, NP or anterior nasal swabs may be placed in 1 to 3 mL of sterile saline (0.85 to 0.9%) in a sterile screw cap container. Do not use vacutainer or "pop-top" tubes.
