A rapid at-home covid-19 test — for under $50 — just got FDA approval

People who think they were exposed to the coronavirus face a number of logistical obstacles in the United States to get tested: Many tests take days to produce results, require leaving quarantine to visit a medical professional, or — most likely — both. That could change with Lucira Health’s “All-In-One” test kit, which on Tuesday became the first rapid, at-home test authorized by the Food and Drug Administration.