Where do any of these manufacturers claim that they're PCR tests should be run at 40 CT? The manufacturers also point out that their PCR tests are not meant to diagnose anything.That was the manufacturers' faults.
That's just what the CDC finally admitted.But so far as I know, they may be run at lower cycles now.
And they don't set limits because it's not binary. Their testing equipment is just used to generate material for research.The government does not regulate them, so it is still apparently up to the manufacturers to set the limit.