From this video you will learn that one of the "sequences" being sought in COVID testing is identical to the human Chromosome 8. This strongly suggests that the result of such a test will be positive, as we all have Chromosome 8.
For a source post, click here. For the PCR-assay information from the W.H.O. that includes the same sequence (namely, our Chromosome 8), click here.
What is Chromosome 8? Find out here.
Quote from Wikipedia: Chromosome 8 spans about 145 million base pairs (the building material of DNA) and represents between 4.5 and 5.0% of the total DNA in cells. About 8% of its genes are involved in brain development and function, and about 16% are involved in cancer. A unique feature of 8p is a region of about 15 megabases that appears to have a high mutation rate. This region shows a significant divergence between human and chimpanzee, suggesting that its high mutation rates have contributed to the evolution of the human brain.
The COVID test being referred to here identifies our Chromosome 8. Some think the tests are "a DNA grab"...