The CDC support only using a cycle threshold of 33 yet they have come forward with criticism of Fauci's description of how the CT works. The other thing is some machines a CT of 35 is equivalent to a CT of 40 on another machine... In other words CT is not an accurate metric to determining the efficacy of the test or to determining whether the test is a false positive or not. It is absolutely correct that CT cutoffs do need to be monitored and that it should be reported, however that number on its own is misleading without other information to go along with it. You are right that it can be misused as a screening tool, however that doesn't change that Dr Sam Bailey is intentionally misleading people with faulty or improperly worded claims about these tools. There are valid criticisms of these tools, hers are not that.