COVID-19 Q&A: Which is better, the deep nasal swab
2021-8-2 · A PCR swab test uses a swab to take a sample from the nose and throat. The swab is then usually sent in a test tube to a lab to be analysed for the virus. A PCR saliva test uses a small saliva sample that is usually collected in a tube that has a mixing agent in, similar to the swab test, it is then sent away to be analysed.
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