Elizabeth Holmes speaks on stage during the closing session of the Clinton Global Initiative in 2015.
Elizabeth Holmes speaks on stage during the closing session of the Clinton Global Initiative in 2015. - 
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We've done some coverage of the now troubled biotech startup Theranos, the company with the cutting edge blood test kits that are not so cutting edge after all.

Last year, CEO and founder Elizabeth Holmes was at the top of the Forbes magazine list of this country's richest self-made women with an estimated net worth of $4.5 billion dollars.

This morning, Forbes, with an eye to Theranos' difficulties, took Holmes off the list and rated her net worth at...nothing.

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Follow Kai Ryssdal at @kairyssdal