So why are they waiting until December 31, 2021 to withdraw the test?
They are not withdrawing the RT-PCR test, they are withdrawing the first Assay Panel that was released and distributed by the CDC. See post 39. They are waiting until Dec 31 because the Assay Panel still works fine, and they need to give labs a chance to transition to another Assay Panel, and in some cases new equipment.
AHA!
Somebody finally asked THE question!
Why indeed?
Speculation invited!
They probably have billions in stock and if they don't use them (and bill for them) they will have to throw them out and lose their investment.
But don't worry. Bill Gates and George Soros have bought a test kit company and will (conveniently) be able to sell us new Covid-19 swabs and eventually fill in the testing and billing gap.