A diagnostic technique called a nasal swab PCR test is employed to find particular genetic material from viruses, including the SARS-CoV-2 virus that causes COVID-19. To get a sample from the nasopharyngeal region, a swab is inserted into the nostril. Next, the material is examined by amplifying and identifying viral RNA using Polymerase Chain Reaction (PCR) technology. This test is a trustworthy way to diagnose infections because of its great sensitivity and accuracy.
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