Failure pattern · United States · 2003–2022
Theranos: the $9 billion blood-testing fraud
Theranos claimed it could run hundreds of tests from a few drops of blood. It raised hundreds of millions, reached a $9 billion valuation, and collapsed when reporting showed the technology didn't work.
By Shivam Bhandari · Reviewed 31 October 2026 · How we write
by the numbers
- Peak valuation (2014)
- about $9 billion
- Founder age at founding
- 19
- Exposé
- October 2015, Wall Street Journal
- Holmes's sentence
- over 11 years
What happened
Elizabeth Holmes dropped out of Stanford at 19 and founded Theranos in 2003. She promised that its ‘Edison’ device could run many lab tests from a finger-prick of blood, making testing cheap and accessible. The board included former US secretaries of state and defence, and investors put in hundreds of millions of dollars. By 2014 Theranos was valued at about $9 billion.
Theranos partnered with Walgreens to offer tests in stores in Arizona. Behind the scenes, the Edison devices were unreliable, and the company secretly ran most tests on modified commercial machines. Employees who raised concerns were silenced or left.
In October 2015 Wall Street Journal reporter John Carreyrou exposed the problems. Regulators sanctioned the company, it voided years of test results, and it dissolved in 2018. Holmes was convicted of fraud in 2022 and sentenced to more than 11 years in prison.
Timeline
- 2003
Theranos founded.
- 2013
Walgreens partnership launches.
- 2015
WSJ investigation published.
- 2018
Company dissolves; Holmes charged.
- 2022
Holmes convicted.
what went wrong
- Promises far ahead of what the technology could do.
- Secrecy and intimidation silenced internal critics.
- A celebrity board with little scientific oversight.
- Investors trusted the story without checking the science.
the lesson
Charisma, secrecy, and famous backers are not evidence; products that touch health and safety must be independently verified.
Apply it to your business
- 1Verify claims before you invest or partner.
- 2Make it safe for employees to raise concerns.
- 3Build boards with real domain expertise.
Laws at work in this story
Figures are rounded and drawn from public reports, company filings and widely cited coverage at the time. Check the company's latest filings before relying on any number.