PolitiFact | No, COVID-19 PCR tests don’t put luciferase in your brain

And while some claims about luciferase and COVID-19 vaccines and tests appear couched in a biblical context, the enzyme doesn't refer to the devil. Luciferase is derived from the latin roots "lux," meaning "light," and "ferre," meaning "to carry," Soni said. "Lucifer translates to lightbearer, which is an apt description of luciferase assays."…

https://www.politifact.com/factchecks/2022/oct/27/viral-image/no-covid-19-pcr-tests-dont-put-luciferase-in-your/

Does PCR testing work?

A look at internet claims that PCR testing for SARS-Cov-2 has a high failure rate.
https://youtu.be/9H2YA0JvfRc