Several companies could mass produce them, but the FDA does not have an approval procedure for a home test that is insensitive enough to only show "positive" when somebody is contagious. And those are the important features of these strips.

Instead they insist on tests being much more sensitive, which will give positive results on dead virus fragments long after people are no longer contagious. They also want such tests performed in a certified lab by a certified tech. Not at all compatible with Dr. Mina's proposal.

Problems are not technical. They are FDA red tape.