The coronavirus family causes the common cold. We all likely have antibodies.
I agree SARS-COV-2 is likely an engineered virus. It began as, and still is, a member of the coronavirus family. As such humans who have had the common cold likely have coronavirus antibodies.
Immune cells for common cold may recognize SARS-CoV-2
https://www.nih.gov/news-events/nih-research-matters/immune-cells-common-cold-may-recognize-sars-cov-2
Agree. Recent articles quote 40 PCR amplification cycles per positive test.
https://bitesizebio.com/24581/what-is-a-ct-value/
Cq values are inverse to the amount of target nucleic acid that is in your sample, and correlate to the number of target copies in your sample. Lower Cq values (typically below 29 cycles) indicate high amounts of target sequence. Higher Cq values (above 38 cycles) mean lower amounts of your target nucleic acid. High Cq values can also indicate problems with the target or the PCR set-up, as outlined later in the pitfalls section of this article.