Researchers assume the piece of RNA the test is looking for is part of SARS-CoV-2. But without having the actual isolated virus in hand, there is no way to know this RNA fragment is any more relevant than a speck of dust on the moon.

COVID: the virus was never proven to exist; a statement from Dr. Andrew Kaufman, Dr. Tom Cowan, and Sally Fallon Morell https://blog.nomorefakenews.com/2021/02/26/covid-the-virus-was-never-proven-to-exist-a-statement/