UPDATE 1-Quest Diagnostics launches coronavirus testing for employees returning to work

Quest Diagnostics Inc on Wednesday launched services to support large-scale testing for the new coronavirus as companies look to bring employees back to offices safely. The company in April started testing blood samples to detect antibodies - proteins produced in response to infection - against COVID-19, the respiratory disease caused by the coronavirus. The diagnostic company said the "return to work services" provide employers access to its COVID-19 antibody testing as well