Q&A on COVID-19 Antibody Tests

Much of the focus on COVID-19 testing thus far into the pandemic has been on tests that can determine whether someone is actively infected with the novel coronavirus, or SARS-CoV-2. But, in his drive to “open up America again,” President Donald Trump has turned his attention to blood-based antibody tests, which can show whether someone was previously infected with the virus.

“This will help us assess the number of cases that have been asymptomatic or mildly symptomatic, and support our efforts to get Americans back to work by showing us...