The Covid19 PCR test is not testing for the SARSCoV2 virus

It's not testing for a part of the RNA sequence of the virus

The CoViD19 PCR is testing for an RNA sequence produced by OUR OWN CELLS supposedly produced in reaction to the SARSCoV2 virus!!!

Can anyone confirm this with a source?

Time stamp 4m:35s

https://youtu.be/FHhyLvH7FQg