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Elizabeth Holmes trial: ex-employee says she was pushed back in an attempt to sound the alarm

SAN JOSE, Calif .– A former lab worker at Theranos Inc. said on Wednesday she had sounded the alarm on the startup’s blood testing practices with colleagues, managers and even a senior executive and member of the board of directors, but that she had been pushed back at every turn.

Testimony from former employee Erika Cheung reinforced federal prosecutors’ case against Theranos founder Elizabeth Holmes, who is battling charges that she defrauded patients and investors by promising that her technology could test a range of health problems using just a few drops of blood from a finger prick.