This is in the FDA and EMA approvals. Properly developed PCR assays are extremely sensitive and specific.
Unkle doesn't like it, and his hero Mullis was talking about something completely different (and still wrong), but it's true.
If I were to post the data showing the sensitivity and specificity of some PCR tests, Unkle would not understand it. He can't explain what PCR is. Not worth our time.