If the tests could be done on someone who is asymptomatic, then it could be hugely beneficial. For anyone already feeling sick... stay home and self-quarantine

If the tests could be done on someone who is asymptomatic, then it could be hugely beneficial. For anyone already feeling sick... stay home and self-quarantine. If we could _just_ test everybody regardless of symptoms then we could quickly isolate people spreading it in ignorance. That is the main benefit I could reason out. Probably early detection and better planning as someone with it progresses, too.