Company lists · Data refreshed September 2026

Top 25 Companion diagnostic companies worldwide

RevenueBase identified 2,636 company matches for companion diagnostic companies worldwide as of September 2026 and tracks 113,907 professional contacts across them, including 46,573 with verified work emails. The United States is the largest market and San Diego the largest hub.

This list covers company matches for companion diagnostic companies worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 19, 2026. Country and city lists for companion diagnostic companies follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 19, 2026 How this list was built
2,636Companies
113,907Contacts tracked
46,573Verified emails
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The 25 largest companion diagnostic companies worldwide

Ranked by team size
Top 25 of 2,636 company matches for companion diagnostic companies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchBrea, CA, United StatesHQ recorded Sep 19, 202610001+10,069 contacts →

Exact match

“A global leader in advanced diagnostics, Beckman Coulter has challenged convention to elevate the diagnostic laboratory’s role in improving patient health for more than 80 years.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2Exact matchSan Diego, CA, United StatesHQ recorded Sep 19, 20265,001-10,0008,987 contacts →

Exact match

“At Illumina, our goal is to apply innovative technologies and revolutionary assays to the analysis of genetic variation and function, making studies possible that were not even…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3Exact matchMadison, WI, United StatesHQ recorded Sep 19, 20265,001-10,0005,907 contacts →

Exact match

“Exact Sciences is now @Abbott.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4Exact matchAustin, TX, United StatesHQ recorded Sep 19, 20265,001-10,0005,354 contacts →

Exact match

“Natera™ is a global leader in cell-free DNA and precision medicine, dedicated to oncology, women’s health, and organ health.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5Exact matchSunnyvale, CA, United StatesHQ recorded Sep 19, 20265,001-10,0004,445 contacts →

Exact match

“Cepheid is dedicated to improving healthcare by pioneering molecular diagnostics that combine speed, accuracy, and flexibility.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6Exact matchPalo Alto, CA, United StatesHQ recorded Sep 19, 20261,001-5,0003,321 contacts →

Exact match

“Guardant Health is a leading precision medicine company focused on guarding wellness and giving every person more time free from cancer.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7Exact matchRaritan, NJ, United StatesHQ recorded Sep 19, 20261,001-5,0002,730 contacts →

Exact match

“QuidelOrtho develops and manufactures intelligent solutions that are transforming data into understanding and action for more people in more places every day, helping spot trends…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8Exact matchSalt Lake City, UT, United StatesHQ recorded Sep 19, 20261,001-5,0002,718 contacts →

Exact match

“Myriad Genetics is a leading molecular diagnostic testing and precision medicine company dedicated to advancing health and well-being for all.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9Exact matchBoston, MA, United StatesHQ recorded Sep 19, 20261,001-5,0001,747 contacts →

Exact match

“Foundation Medicine is a global, patient-focused precision medicine company delivering high-quality, transformative diagnostic solutions in cancer and other diseases.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10Exact matchFort Myers, FL, United StatesHQ recorded Sep 19, 20261,001-5,0001,678 contacts →

Exact match

“Our vision: A world where every cancer treatment decision is as personal as the patient.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11Exact matchIrving, TX, United StatesHQ recorded Sep 19, 20261,001-5,0001,556 contacts →

Exact match

“Caris Life Sciences® (Caris) is the leading next-generation TechBio company and precision medicine pioneer that is actively developing and delivering innovative solutions to…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12Exact matchUnited StatesHQ recorded Sep 19, 20265,001-10,0001,400 contacts →

Exact match

“As a leading global drug discovery and development laboratory services organization, IQVIA Laboratories provides a broad range of central laboratory and specialty biomarker…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13Exact matchStamford, CT, United StatesHQ recorded Sep 19, 20261,001-5,0001,048 contacts →

Exact match

“We see a world where every genetic condition is understood, and every patient receives the care they need to live their healthiest life through genomics.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14Exact matchAliso Viejo, CA, United StatesHQ recorded Sep 19, 2026501-1,000957 contacts →

Exact match

“Ambry Genetics, a Tempus company, translates scientific research into clinically actionable test results based upon a deep understanding of the human genome and the biology behind…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15Exact matchBangalore, IndiaHQ recorded Sep 19, 20261,001-5,000954 contacts →

Exact match

“MedGenome is a global genomics and precision diagnostics company focused on enabling accurate, early and actionable diagnosis through advanced genomic science.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16Exact matchMontreal, QC, CanadaHQ recorded Sep 19, 2026501-1,000760 contacts →

Exact match

“As a global leader in precision medicine testing services, we partner with our clients to address the most complex biomarker and bioanalytical challenges and deliver highly…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17Exact matchSan Francisco, CA, United StatesHQ recorded Sep 19, 20261,001-5,000703 contacts →

Exact match

“Invitae, now part of Labcorp, is a leading medical genetics company trusted by millions of patients and their providers to deliver timely genetic information using digital…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18Exact matchLyon, FranceHQ recorded Sep 19, 2026501-1,000701 contacts →

Exact match

“European leader in the sector of specialized medical pathology, Eurofins Biomnis carries out over analyses per day from a range of over 2,500 available tests, including…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19Exact matchMenlo Park, CA, United StatesHQ recorded Sep 19, 2026501-1,000696 contacts →

Exact match

“BillionToOne is a precision diagnostics company with the mission to make molecular diagnostics more accurate, efficient, and accessible.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20Exact matchFriendswood, TX, United StatesHQ recorded Sep 19, 2026501-1,000682 contacts →

Exact match

“Castle Biosciences (Nasdaq: CSTL) is a leading diagnostics company improving health through innovative tests that guide patient care.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21Exact matchNew York, NY, United StatesHQ recorded Sep 19, 2026501-1,000677 contacts →

Exact match

“The Menarini Group ("Menarini"), a leading Italian pharmaceutical and diagnostics company, and Stemline Therapeutics, Inc.("Stemline"), a wholly-owned subsidiary of the Menarini…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
22Exact matchPortsmouth, NH, United StatesHQ recorded Sep 19, 20261,001-5,000676 contacts →

Exact match

“Every second of every hour of every day, 44 of our products are employed in the battle against cancer.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23Exact matchSouth San Francisco, CA, United StatesHQ recorded Sep 19, 2026501-1,000675 contacts →

Exact match

“Veracyte is a global diagnostics company that empowers clinicians with the high-value insights they need to guide and assure patients at pivotal moments in the race to diagnose…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24Exact matchHamburg, GermanyHQ recorded Sep 19, 2026501-1,000606 contacts →

Exact match

“Sysmex supports healthcare professionals and patients around the world with a broad range of medical diagnostics products and solutions in a variety of fields.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25Exact matchMinato-ku, JapanHQ recorded Sep 19, 20261,001-5,000556 contacts →

Exact match

“Fujirebio is a world leading in vitro diagnostics (IVD) company and innovation-driven content provider, enabling breakthrough diagnostic solutions to reach patients worldwide…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase

Showing 25 of 2,636 companion diagnostic companies worldwide

See the full list, filter by size, metro and specialty, and access 46,573 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Companion diagnostic companies worldwide at a glance

As of Sep 19, 2026
40.9%Verified-email coverage
43.2Average contacts per company
11-50Median size (employees)
1.6%Largest-city concentration · San Diego
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
964
11-50
1,001
51-200
407
201-500
144
501-1,000
50
1,001-5,000
48
5,001-10,000
6
10001+
13

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage
Every country. Country and city lists for companion diagnostic companies are linked below.
What qualifies
Company records worldwide whose business descriptions match “companion diagnostic companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 46,573 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 19, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Companion diagnostic companies by location

17 lists · largest first

Every Companion diagnostic companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “companion diagnostic companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many companion diagnostic companies are there worldwide?

RevenueBase identified 2,636 company matches for companion diagnostic companies worldwide as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Beckman Coulter Diagnostics tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most companion diagnostic companies?

The United States leads with 837 companies, followed by India (169) and Brazil (96). Every companion diagnostic companies list by country and city is linked on this page.

Which city has the most companion diagnostic companies?

San Diego leads with 41 company records, followed by Cambridge (37) and Singapore (36).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 46,573 professional contacts with verified work emails tracked across these 2,636 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.