Yes, we would need an antibody test (typically much easier/faster/cheaper) to detect whether you had the disease and developed antibodies... although those anti

Yes, we would need an antibody test (typically much easier/faster/cheaper) to detect whether you had the disease and developed antibodies... although those antibodies fade with time, and it doesn't tell you if you're currently infections. So it would make sense at some future date to run a quick antibody test, and if positive run the longer 6+hr RT-PCR for 2019-nCoV. The concern is that someone could become reinfected either due to insufficient immune response or small evolution in the virus surface protiens, which could also make it more or less virulent.