KS reduced their sensitivity on the tests in early Jan with no announcement, It was considered 42 cycles which was apparently one of the most sensitive for the market but back in October that was considered a good thing. COVID testing manufacturers have given guidance on their own cycle threshold as well.
Apparently anything 35 and over is deemed too sensitive. It picks up the virus but is considered past the point of contagious. FWIW KS set their limit at 35 in early Jan but these are only for state run labs, private run labs may have different thresholds. Though IIRC Fauci recommends 34 cycles and below.
This all said I think the issue becomes what our response is. If someone is considered positive with an overly sensitive test then should they still be considered positive in the number? They had the presence of the virus still right? So is the descriptor of "false positive" accurate? BUT if someone is considered positive with an overly sensitive test then the protocol for that should changed based on contagious vs not. Much of our protocols for isolation and quarantine and subsequent testing requirements hasn't made that separation between someone who would be considered positive but is past the point of passing it onto others which is usually the greatest concern.
What is KS?