A COVID-19 Immunity Test Is on the Way

Several private U.S.-based companies, such as Biomerica and Chembio Diagnostics, have already begun to sell blood tests for COVID-19 antibodies in international markets. The tests use blood from a finger prick and are easy to administer. They're also relatively inexpensive, with some costing less than $10. And some of these tests can deliver results in as little as 10 minutes.