• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia
HealthTheranos

How Theranos Technology Struggled to Meet Elizabeth Holmes’ Ambitions

By
Laura Lorenzetti
Laura Lorenzetti
Down Arrow Button Icon
By
Laura Lorenzetti
Laura Lorenzetti
Down Arrow Button Icon
December 28, 2015, 11:55 AM ET
Fortune Global Forum 2015
FORTUNE GLOBAL FORUM Monday, November 2nd, 2015 2015 FORTUNE GLOBAL FORUM San Fransisco, CA, USA Elizabeth Holmes, Theranos founder and CEO Panelists: Elizabeth Holmes Fortune Editor Alan Murray Photograph by Stuart Isett/Fortune Global ForumPhotograph by Stuart Isett/Fortune Global Foru

This post has been updated to include comments from Theranos.

Theranos founder and CEO Elizabeth Holmes has long touted her company’s revolutionary technology, saying that just a few drops of blood and its proprietary machines would replace the vials of blood needed for traditional tests. However, based on a series of reports, Holmes’s ambitions appeared to have outstripped the company’s progress.

Theranos and Holmes have dominated headlines since mid-October when the Wall Street Journal published an expose that accused Theranos of not using its own technology to test most of its blood samples. Rather, it relied on industry standard machines made by companies like Siemens, which are also used by traditional labs. The WSJ report also alleged that Thernaos cheated on proficiency tests that were vital to certifications. Theranos has countered those claims, saying that over 50% of its tests use proprietary technology and methods beyond the nanotainer, the name of its super small blood sample container.

Holmes, who dropped out of Stanford University to start the company at age 19, seems to have let her hopes for nanotainers and small-sample blood testing outstrip the technology’s true capabilities, according to the latest report in the WSJ. One anonymous employee recounted a story about sitting in a hotel room with Holmes in Zurich the night before a big meeting with Novartis:

They drew drops of their own blood to try the company’s testing machine, but the devices wouldn’t work, says someone familiar with the incident. Sometimes the results were obviously too high. Sometimes they were too low. Sometimes the machines spit out only an error message.

After two hours, the colleague called it quits, leaving Ms. Holmes still squeezing blood from her fingers to test it again.

The late-night testing never fixed the machines. In the meeting with a group of Novartis executives, the three machines returned error messages during the demonstration, the employee told the WSJ. The story is just one of a series about Holmes that chronicle her background and how she developed the company.

Theranos responded that there was only one error message due to a person knocking out the power cord during the Novartis meeting. The company has disputed the ongoing reports concerning its allegedly faltering technology, including this most recent report.

“Unfortunately, the Wall Street Journal continues to print false and misleading comments from two former disgruntled employees,” said Brooke Buchanan, Theranos’ vice president of communications. “Theranos is really focused on continuing its mission to provide access, transparency, and preventative care to patients around the country.”

Holmes’s graced the front cover of Fortune’s June issue, which helped boost her profile in Silicon Valley and drew attention to her biotech startup Theranos. That cover story said Theranos “currently offers 200–and is ramping up to offer more than 1000–of the most commonly ordered blood diagnostic tests, all without the need of a syringe.” However, that sum was proven false in more recent company updates, as Fortune’s Roger Parloff explained.

Read the WSJ‘s full report here.

About the Author
By Laura Lorenzetti
See full bioRight Arrow Button Icon

Latest in Health

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025

Most Popular

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Fortune Secondary Logo
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • Future 50
  • World’s Most Admired Companies
  • See All Rankings
Sections
  • Finance
  • Fortune Crypto
  • Features
  • Leadership
  • Health
  • Commentary
  • Success
  • Retail
  • Mpw
  • Tech
  • Lifestyle
  • CEO Initiative
  • Asia
  • Politics
  • Conferences
  • Europe
  • Newsletters
  • Personal Finance
  • Environment
  • Magazine
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Fortune Brand Studio
  • Fortune Analytics
  • Fortune Conferences
  • Business Development
  • Group Subscriptions
About Us
  • About Us
  • Editorial Calendar
  • Press Center
  • Work At Fortune
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map
Fortune Secondary Logo
  • About Us
  • Editorial Calendar
  • Press Center
  • Work At Fortune
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map
  • Facebook icon
  • Twitter icon
  • LinkedIn icon
  • Instagram icon
  • Pinterest icon

Latest in Health

Startups & VentureGen Z
As Gen Z swaps dating apps for run clubs, Strava’s CEO says the $2 billion unicorn plans to go public ‘at some point’
By Marco Quiroz-GutierrezMarch 3, 2026
2 hours ago
Big TechSocial Media
YouTube’s cofounder and former tech boss doesn’t want his kids to watch short videos, warning short-form content ‘equates to shorter attention spans’
By Marco Quiroz-GutierrezMarch 1, 2026
2 days ago
HealthTikTok
Gen Z men are eating ‘boy kibble,’ the human equivalent to dog food, to load up on protein cheaply
By Jake AngeloMarch 1, 2026
2 days ago
Healthsleep
8 Best Firm Mattresses in 2026: Tested and Reviewed by Sleep Experts
By Christina SnyderFebruary 27, 2026
4 days ago
HealthFood and drink
Chains like Sweetgreen and Chipotle are finally realizing they need to look beyond the ‘slop bowl’
By Phil WahbaFebruary 27, 2026
4 days ago
chat
Healthchat
Here are the 7 rules of group chats, including how to leave when you’ve had enough
By Kelvin Chan and The Associated PressFebruary 27, 2026
4 days ago

Most Popular

placeholder alt text
Middle East
U.S. military gives Iran a taste of its own medicine with cheap copycat Shahed drones, while concern shifts to munitions supply in extended conflict
By Jason MaMarch 1, 2026
2 days ago
placeholder alt text
Economy
Interest on the $38.8 trillion national debt has tripled since 2020, and it already costs taxpayers more than defense and Medicaid
By Nick LichtenbergMarch 2, 2026
21 hours ago
placeholder alt text
Middle East
Iran’s Islamic Revolutionary Guard controls a sprawling business empire that dominates the economy
By Jason MaMarch 2, 2026
1 day ago
placeholder alt text
Success
Slack cofounder says workers and CEOs can get stuck doing 'fake' work like pre-meetings and slideshows
By Emma BurleighMarch 1, 2026
2 days ago
placeholder alt text
Personal Finance
Current price of silver as of Monday, March 2, 2026
By Joseph HostetlerMarch 2, 2026
1 day ago
placeholder alt text
AI
American schools weren’t broken until Silicon Valley used a lie to convince them they were—now reading and math scores are plummeting
By Sasha RogelbergMarch 1, 2026
2 days ago

© 2026 Fortune Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Fortune Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.