Yes, thank you. I wasn't asking about the PCR. I am already familiar with all of that fraudulent use! Perhaps others will need to read your very good summary.

I think you are correct that the closest thing an antibody test could be looking for is something related to the response to a typical coronavirus. This is the info I was looking for.

For covid19, the antibody test is likely looking for the type of antibodies that the body produces when exposed to either the spike protiens, or to a typical coronavirus / sars-cov1 infection antibody type.

I share your concern about how "medically useful" ways these procedures are being carried out today. Actually I'm relieved to no longer be among those in the medical professions!

I haven't had a flu shot in decades...just once many years ago while I was working in one hospital... and can't say that I have had the REAL flu but perhaps once... and it would be long ago, so I don't know if that would be reflected. Probably not.