Verified Nov 2026
Electronics & Software
·
Palo Alto, California
·
Since 2003
Theranos is a health technology company headquartered in Palo Alto, California, founded in 2003. It developed blood-testing technology and clinical laboratory services intended to run a range of tests from small blood samples, with its Nanotainer device among its proprietary systems. The company's estimated size is 100 to 200 employees with revenue in the $100 to 250 million range (estimated band), and it is privately held. It served the medical sector, with the record also listing automotive and electric-vehicle industries. The company ceased operations in 2018.
Theranos at a glance
Revenue
$100-250M
Est. band
Employees
100-200
Founded
2003
Headquarters
Palo Alto, California
Industries
Automotive
Electric Vehicles
Medical
Overview
Theranos is a health technology company headquartered in Palo Alto, California, founded in 2003. It developed blood-testing technology and clinical laboratory services intended to run a range of tests from small blood samples, with its Nanotainer device among its proprietary systems. The company's estimated size is 100 to 200 employees with revenue in the $100 to 250 million range (estimated band), and it is privately held. It served the medical sector, with the record also listing automotive and electric-vehicle industries. The company ceased operations in 2018.
At a glance
Attribute | Detail |
|---|---|
Founded | 2003 |
Headquarters | Palo Alto, California |
Employees | 100-200 |
Revenue | $100-250M (estimated) |
Primary capability | Electronics & Software |
What Theranos makes
The company's listed capability is electronics and software, with no certifications recorded in the directory record.
Latest developments
2026-10-24 — Theranos Isn’t About Elizabeth Holmes. (substack.com)
2026-01-21 — Theranos founder Elizabeth Holmes asks Trump to commute her prison sentence | Reuters (reuters.com)
2025-05-16 — A startup with Theranos ties has another blood test in the works. This time, competition is waiting. | PharmaVoice (pharmavoice.com)
2025-05-12 — 'This is not Theranos 2.0': Elizabeth Holmes' partner is the CEO behind new blood-testing startup | Fortune (fortune.com)
2025-02-24 — Appeals court upholds convictions of Theranos founder Elizabeth Holmes, former lover and business partner - CBS San Francisco (cbsnews.com)
Company details
The company is privately held and was reported at a peak valuation of approximately $9 billion before it ceased operations in 2018. Theranos was founded in 2003, has an estimated 100-200 employees, and is headquartered in Palo Alto, California.
Frequently asked questions
What does Theranos make?
Theranos is a health technology company headquartered in Palo Alto, California, founded in 2003. It developed blood-testing technology and clinical laboratory services intended to run a range of tests from small blood samples, with its Nanotainer device among its proprietary systems. The company's estimated size is 100 to 200 employees with revenue in the $100 to 250 million range (estimated band), and it is privately held. It served the medical sector, with the record also listing automotive and electric-vehicle industries. The company ceased operations in 2018.
Where is Theranos headquartered?
Theranos is headquartered in Palo Alto, California (1701 Page Mill Road, Palo Alto, California, 94304).
When was Theranos founded?
Theranos was founded in 2003.
How big is Theranos?
Theranos has an estimated 100-200 employees, with revenue in the $100-250M range (estimated).
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Last verified Nov 2026. Is this your company? Request a correction.
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