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18 lip 2024 · Results. Your COVID-19 diagnostic test result could be positive or negative. Positive result. This means that you have an infection with the virus that causes COVID-19. Positive test results most often are correct, even if you have no symptoms. You can spread the virus to others even if you have no symptoms.
COVID-19 is caused by infection with the severe acute respiratory syndrome coronavirus 2, also called SARS-CoV-2. The coronavirus spreads mainly from person to person, even from someone who is infected but has no symptoms.
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
associated with COVID-19, but the virus is likely spread to others when an individual has symptoms of the disease (e.g. fever, coughing, sneezing, difficulty breathing). What is the Mayo Clinic SARS-CoV-2 Molecular Detection Assay? The test is a laboratory-developed test using a real-time PCR method, designed to detect the SARS-CoV-2 virus
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a positive-sense, single-stranded RNA virus that causes COVID-19. Like other coronaviruses that infect humans, SARS-CoV-2 can cause both upper and lower respiratory tract infection.
7 sty 2022 · Dr. Matthew Binnicker and the team at Mayo Clinic Laboratories put together a chart to help break down the different types of COVID-19 tests and when to use them. Test at the health care provider's office or testing site. Polymerase chain reaction (PCR) test nasal swab. What is it? This test looks for the virus' RNA in a patient's sample. A ...
SARS-CoV-2 indicates severe acute respiratory syndrome coronavirus 2; PCR, polymerase chain reaction. a Detection only occurs if patients are followed up proactively from the time of exposure. b More likely to register a negative than a positive result by PCR of a nasopharyngeal swab.
