Theranos Inc.’s former lab director testified Friday about what he called pervasive and persistent errors in the company’s blood-testing technology and his efforts to stop the startup from using its machines on real patients.
Adam Rosendorff, who served as lab director for the defunct blood-testing company from 2013 to 2014, said that he alerted founder and Chief Executive Officer Elizabeth Holmes to the problems with the tests but that his warnings were ignored.
