Company lists · Data refreshed September 2026

Top 25 Diagnostic companies worldwide

Name: Diagnostic companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 18,879 companies tracked

RevenueBase identified 18,879 company matches for diagnostic companies worldwide as of September 2026 and tracks 985,529 professional contacts across them, including 296,358 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for 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 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

18,879Companies

985,529Contacts tracked

296,358Verified emails

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The 25 largest diagnostic companies worldwide

Ranked by team size

Top 25 of 18,879 company matches for 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Thermo Fisher Scientific	Exact match	Waltham, MA, United StatesHQ recorded Sep 19, 2026	10001+	70,907 contacts →
	Exact match “About Thermo Fisher Scientific Thermo Fisher Scientific Inc.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2	ROCHE	Exact match	Switzerland 🇨🇭, MexicoHQ recorded Sep 19, 2026	10001+	63,392 contacts →
	Exact match “Roche is a global pioneer in pharmaceuticals and diagnostics focused on advancing science to improve people’s lives.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3	Agilent Technologies	Exact match	Santa Clara, CA, United StatesHQ recorded Sep 19, 2026	10001+	48,455 contacts →
	Exact match “Agilent customers are finding new ways to treat cancer, ensure food, water, air, and medicine quality and safety, discover new drug treatments, research infectious diseases, and…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4	Siemens Healthineers	Exact match	Forchheim, GermanyHQ recorded Sep 19, 2026	10001+	44,956 contacts →
	Exact match “Siemens Healthineers is a leading medtech company with over 125 years of experience.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5	Labcorp	Exact match	Burlington, NC, United StatesHQ recorded Sep 19, 2026	10001+	38,427 contacts →
	Exact match “Clear and confident health care decisions begin with questions.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6	Quest Diagnostics	Exact match	Secaucus, NJ, United StatesHQ recorded Sep 19, 2026	10001+	27,884 contacts →
	Exact match “Quest Diagnostics (NYSE: DGX) empowers people to take action to improve health outcomes.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7	DASA	Exact match	Sao Paulo, BrazilHQ recorded Sep 19, 2026	10001+	19,606 contacts →
	Exact match “A Dasa é uma das maiores empresas de saúde do mundo, líder em medicina diagnóstica no Brasil.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8	Biomérieux	Exact match	Marcy-l'étoile, United KingdomHQ recorded Sep 19, 2026	10001+	11,986 contacts →
	Exact match “A family-owned company, bioMérieux has grown to become a world leader in the field of in vitro diagnostics.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9	Eurofins	Exact match	LuxembourgHQ recorded Sep 19, 2026	10001+	11,653 contacts →
	Exact match “Since 1987, Eurofins has grown from one laboratory in Nantes, France to over staff across a network of independent companies in 59 countries, operating over 950 laboratories.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10	Grupo Fleury	Exact match	São Paulo, BrazilHQ recorded Sep 19, 2026	10001+	10,468 contacts →
	Exact match “O Grupo Fleury é reconhecido como uma referência de qualidade em medicina diagnóstica no país, com soluções completas, coordenação de cuidado centrada no indivíduo, capacidade de…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11	Beckman Coulter Diagnostics	Exact match	Brea, CA, United StatesHQ recorded Sep 19, 2026	10001+	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
12	Illumina	Exact match	San Diego, CA, United StatesHQ recorded Sep 19, 2026	5,001-10,000	8,987 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
13	Waters Corporation	Exact match	Milford, MA, United StatesHQ recorded Sep 19, 2026	10001+	8,189 contacts →
	Exact match “Waters Corporation (NYSE: WAT) is a global leader in life sciences and diagnostics, dedicated to accelerating the benefits of pioneering science through analytical technologies…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14	Bio-Rad Laboratories	Exact match	Hercules, CA, United StatesHQ recorded Sep 19, 2026	5,001-10,000	8,149 contacts →
	Exact match “Bio-Rad provides the healthcare industry with innovative and useful products that help life science researchers accelerate the discovery process and medical diagnostic labs obtain…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15	IDEXX	Exact match	Westbrook, ME, United StatesHQ recorded Sep 19, 2026	10001+	6,962 contacts →
	Exact match “people, one global focus - enhancing the health and well-being of pets, people, and livestock We are passionate about what we do at IDEXX – and why wouldn’t we be?” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16	Exact Sciences	Exact match	Madison, WI, United StatesHQ recorded Sep 19, 2026	5,001-10,000	5,907 contacts →
	Exact match “Exact Sciences is now @Abbott.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17	Natera	Exact match	Austin, TX, United StatesHQ recorded Sep 19, 2026	5,001-10,000	5,354 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
18	Dedalus	Exact match	Milan, ItalyHQ recorded Sep 19, 2026	5,001-10,000	5,339 contacts →
	Exact match “Dedalus Group is the leading healthcare and diagnostic software provider in Europe, supporting globally the digital transformation of 7500 Healthcare Organisations and 5700 Labs…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19	Menarini Group	Exact match	Firenze, ItalyHQ recorded Sep 19, 2026	10001+	4,897 contacts →
	Exact match “The Menarini Group is a leading international pharmaceutical and diagnostics company, with 140 years of history, present in 140 countries worldwide, with a turnover of 4.88…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20	DR LAL Pathlabs	Exact match	Gurgaon, IndiaHQ recorded Sep 19, 2026	1,001-5,000	4,756 contacts →
	Exact match “Established in 1949, Dr Lal PathLabs today is the largest and most respected diagnostic service provider in the country.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21	Cepheid	Exact match	Sunnyvale, CA, United StatesHQ recorded Sep 19, 2026	5,001-10,000	4,445 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
22	Lancet Laboratories	Exact match	Johannesburg, South AfricaHQ recorded Sep 19, 2026	5,001-10,000	4,365 contacts →
	Exact match “Lancet Laboratories SA is one of the leading pathology laboratories operating throughout South Africa, providing vital diagnostic and monitoring pathology services in the 9…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23	Quidelortho	Exact match	United StatesHQ recorded Sep 19, 2026	5,001-10,000	3,581 contacts →
	Exact match “Bringing precision and passion in everything we do QuidelOrtho stands at the forefront of testing, tracking and disease analysis of health conditions ranging from HIV and…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24	Lifelabs Medical Laboratory Services	Exact match	Toronto, ON, CanadaHQ recorded Sep 19, 2026	5,001-10,000	3,469 contacts →
	Exact match “LifeLabs is Canada’s leading provider of laboratory diagnostic information and digital health connectivity systems, enabling patients and healthcare practitioners to diagnose…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25	Grupo Sabin	Exact match	Brasilia, BrazilHQ recorded Sep 19, 2026	5,001-10,000	3,343 contacts →
	Exact match “O Laboratório Sabin é o maior da região Centro-Oeste, com unidades no D.F, Goiás e Bahia.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “diagnostic companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 18,879 diagnostic companies worldwide

See the full list, filter by size, metro and specialty, and access 296,358 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Diagnostic companies worldwide at a glance

As of Sep 19, 2026

30.1%Verified-email coverage

52.2Average contacts per company

11-50Median size (employees)

1.3%Largest-city concentration · Sao Paulo

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

6,582

11-50

6,780

51-200

3,270

201-500

1,148

501-1,000

443

1,001-5,000

411

5,001-10,000

10001+

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 diagnostic companies are linked below.
What qualifies: Company records worldwide whose business descriptions match “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 296,358 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.

Diagnostic companies by location

77 lists · largest first

Every 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 “diagnostic companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many diagnostic companies are there worldwide?

RevenueBase identified 18,879 company matches for 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?

Thermo Fisher Scientific tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most diagnostic companies?

The United States leads with 3,243 companies, followed by Brazil (2,208) and India (2,010). Every diagnostic companies list by country and city is linked on this page.

Which city has the most diagnostic companies?

Sao Paulo leads with 239 company records, followed by New Delhi (176) and London (141).

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 296,358 professional contacts with verified work emails tracked across these 18,879 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.