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Elizabeth Holmes dropped out of Stanford in 2003 as a 19-year-old to start Theranos, a company now poised to disrupt the medical diagnostic test market. She spoke about the company's vision at their headquarters in Palo Alto, Calif., Thursday afternoon July 3, 2014. (Karl Mondon/Bay Area News Group)
Elizabeth Holmes dropped out of Stanford in 2003 as a 19-year-old to start Theranos, a company now poised to disrupt the medical diagnostic test market. She spoke about the company’s vision at their headquarters in Palo Alto, Calif., Thursday afternoon July 3, 2014. (Karl Mondon/Bay Area News Group)
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The Wall Street Journal reported Friday that Theranos, under scrutiny by the Food and Drug Administration, has stopped using its fingerprick method for all but one test.

FDA officials recently appeared at Theranos unannounced, the Journal said, quoting an anonymous source. Federal officials considered the nanotainers the firm uses to collect blood from finger pricks an unapproved medical device, the article stated.

That report raised more doubts about the diagnostic company s basic premise that it would offer people routine blood tests from a pinprick.

Earlier this week, the Journal reported a myriad of concerns about Theranos technology, as I wrote.

On Thursday, Elizabeth Holmes, the firm s CEO and founder, appeared on CNBC s Mad Money.  She said:

This is what happens when you work to change things, and first they think you re crazy, then they fight you and then all of a sudden you change the world.

Secrecy has long worked for Theranos, building up intense interest in the firm. Now, on Twitter, Theranos has been on the offensive:

Accuracy? You judge: 4 anonymous sources; 0 CEO interviews; 0 regulatory issues; 3.5 million tests

— Theranos (@theranos)

We got FDA clearance of the exact system that is questioning. – to on

— Theranos (@theranos)

Above: Elizabeth Holmes, chief executive of Theranos. (Karl Mondon/Bay Area News Group)

The post The FDA made a surprise visit to Theranos, says report appeared first on SiliconBeat.