Re Covid-19, The Single most important thing to have now

Is a test to see who has had it already.  If people test positive for antibodies, then they can go back to work,  be involved with high risk populations, start breaking us out of the panic and isolation that has put the country in gridlock.  IMO, a lot of people have been exposed and are already past quarantine need.   They are working on it,  and i hope they can get it out very soon.