 The U.S. Food and Drug Administration alerted clinical laboratories and healthcare providers on Monday about false positive results from one of Becton Dickinson and Cos COVID-19 molecular diagnostic tests. The test, designed to detect viral nucleic acid from the virus that causes COVID-19, is in use in nearly every state across the U.S. at hundreds of laboratories. In one study, the manufacturer found about 3 of the results were false positives, according to the FDA. 