A large number of COVID-19 diagnostic tests are reliant on detection of viral RNA from buccal swabs by PCR. A new protocol from Porvair ... a simple method that is compatible with all manual RNA ...

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The arresting agency would use a buccal swab—a swab from the inside of the cheek—to collect the DNA. Then, that DNA would be ...

"Those employees were interviewed, and each was asked if they would provide a buccal swab for DNA testing if needed," police said in a news release published Monday. "Every city employee agreed ...

The selected city workers were also asked and agreed to provide a buccal swab DNA test. However, according to police, Brown declined and later requested for the investigation to be terminated.