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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 ...
Mar 18, 2024 · Nucleic acid amplification tests (NAATs) are highly sensitive and highly specific tests that detect one or more viral ribonucleic acid (RNA) genes. PCR tests are the most common type of NAAT used for COVID-19 testing. Viral RNA may stay in a person’s body for up to 90 days after they test positive.
Mar 16, 2022 · This study compared antibody binding and live virus neutralization to two SARS-CoV-2 variants in patients acutely infected with SARS-CoV-2 acutely (5-19 days after symptom onset, n = 13), after infection (up to 8 months after onset, n = 30), and individuals who werevaccinated against SARS-CoV-2 (14 days after second Moderna dose, n = 19).
May 12, 2023 · Clarified the differences between laboratory-based and point-of-care NAATs. A Nucleic Acid Amplification Test, or NAAT, is a type of viral diagnostic test for SARS-CoV-2, the virus that causes COVID-19. NAATs detect genetic material (nucleic acids). NAATs for SARS-CoV-2 specifically identify the RNA (ribonucleic acid) sequences that comprise ...
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 .
Jul 19, 2021 · Abstract. In this review, we summarize the current status of nucleic acid and antigen testing required for diagnosing SARS-CoV-2 infection and COVID-19 disease. Nucleic acid amplification (NAAT) and antigen-detection (Ag) tests occupy a critically important frontline of defense against SARS-CoV-2 in clinical and public health settings.
