Some one asked about qualitative and quantitative tests. I do not know. But generally , most tests can be used quantitatively but aren't.
And that may be a confusing factor in all this.
I expect the viral one as used now is being used as just qualitative, it is a quick test.
My confusion is why this is taking so long to set up. The reagents in all these tests are pretty standard, only the start material is different (in the case of the viral test bits of the covid19 viral coat, immobilised on a support. We knew how to do this in January. I suspect the places where things like that are manufactured are made in Germany (Stan do you know).
The antibody tests take longer, and possibly demand the making of a human recombinant proteins....but once that is done everything else in the kit and the materials are standard. It can possibly can be run in labs that running similar tests (one exists in Oxford, Birmingham, Liverpool and a couple in London that I personally know about.
I think this is our leaders taking what the scientists say to literally and not asking the right questions and wanting to be positive
SCIENTIST: We have a test
POLITICIAN : Good
POLITICIAN TO THE NATION: We have a test and will have everyone tested before the weekend.
SCIENTIST: we haven't really mass produced it or quality control