COVID Detection - Is PCR the Best Method?

PCR can be utilized to look for DNA from the hazelnut tree. In contrast with the ELISA test that's looking for protein, this is looking for DNA. This one is available for purchase in the US, but as far as I know, it wasn't offered by a third party lab for testing. And there is a third or there are two other tests that I did not look at, but they're also available.