What a former employee says happened while working at Theranos

Erika Cheung was a senior in college attending the University of California, Berkeley when she first heard about a company called Theranos.
2:15 | 03/15/19

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Transcript for What a former employee says happened while working at Theranos
Will fresh out of Berkeley. Erica Chung started working in the lab that processed patient samples and says she almost immediately noticed an intense culture of secrecy. They would guaranteed. Certain portions. Collapses you mean you can. See especially when outside vendors with come in the game always had to be escorted by. At what point do you start to think something isn't right here. Heading the transition happens when I started processing patients involves so you basically start out with a base test yet you put that based test in your machine just to say okay we know that it's working we know that it's clear exactly and what happened and it kept him. I kept running over and O turnovers and and Howell he was handled it totally blew me away. And age about data points they said oh well this is like the best Chiu out of six the way that we kind of average sings so year. You're saying essentially. We're cherry picking the information right in order to make information makes split with finances. We were still processing patient. Meaning those patients were taking it for me that you were providing to them and making medical disease. Quality controls are failing. At one point it seemed almost every day. When Erica says she reads these issues directly with Sonny about money there doses president and CEO. She says he would become in re he had asked me so how do you like Britain could come. I really enjoy working for this company a lot of problems. For having a lot of issues with her quality controls. And then here's that lost it at that point saying I'm I'm tired of people coming in here and and starting fires were there no fires they've heard from some employees that the science tests. Where those who are most afraid of some people those who are reporting to him their results. I just don't think that's accurate and should someone go to jail for this I think this is a business failure but it's not fraud. And I'm very confident that when the jury hears a whole story. You're going to see an acquittal in this case.

This transcript has been automatically generated and may not be 100% accurate.

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