Company lists · Data refreshed September 2026
Top 25 Clinical laboratory testing companies worldwide
RevenueBase identified 11,475 clinical laboratory testing companies worldwide as of September 2026 and tracks 520,049 professional contacts across them, including 124,194 with verified work emails and 0 with mobile numbers. The United States is the largest market and Sao Paulo the largest hub.
This list covers clinical laboratory testing companies worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 16, 2026. Country and city lists for clinical laboratory testing companies follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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.
The 25 largest clinical laboratory testing companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 38,427 contacts → | ||||
Indirect evidence “Clear and confident health care decisions begin with questions.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 2 | 27,884 contacts → | ||||
Indirect evidence “Quest Diagnostics (NYSE: DGX) empowers people to take action to improve health outcomes.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 3 | 19,606 contacts → | ||||
Indirect evidence “A Dasa é uma das maiores empresas de saúde do mundo, líder em medicina diagnóstica no Brasil.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 4 | 10,468 contacts → | ||||
Indirect evidence “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…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 5 | 10,069 contacts → | ||||
Partial evidence “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.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 6 | 9,234 contacts → | ||||
Partial evidence “A global leader in testing, ALS provides comprehensive testing solutions to clients in a wide range of industries around the world.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 7 | 8,189 contacts → | ||||
Indirect evidence “Waters Corporation (NYSE: WAT) is a global leader in life sciences and diagnostics, dedicated to accelerating the benefits of pioneering science through analytical technologies…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 8 | 6,962 contacts → | ||||
Indirect evidence “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?” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 9 | 5,354 contacts → | ||||
Indirect evidence “Natera™ is a global leader in cell-free DNA and precision medicine, dedicated to oncology, women’s health, and organ health.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 10 | 4,756 contacts → | ||||
Indirect evidence “Established in 1949, Dr Lal PathLabs today is the largest and most respected diagnostic service provider in the country.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 11 | 4,445 contacts → | ||||
Indirect evidence “Cepheid is dedicated to improving healthcare by pioneering molecular diagnostics that combine speed, accuracy, and flexibility.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 12 | 4,365 contacts → | ||||
Partial evidence “Lancet Laboratories SA is one of the leading pathology laboratories operating throughout South Africa, providing vital diagnostic and monitoring pathology services in the 9…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 13 | 3,469 contacts → | ||||
Partial evidence “LifeLabs is Canada’s leading provider of laboratory diagnostic information and digital health connectivity systems, enabling patients and healthcare practitioners to diagnose…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 14 | 3,436 contacts → | ||||
Indirect evidence “Life Technologies is now part of Thermo Fisher Scientific.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 15 | 3,223 contacts → | ||||
Indirect evidence “Ser la institución líder en prevención y diagnóstico oportuno, en las áreas de influencia de nuestras clínicas, que contribuya a conservar y mejorar la salud de las personas.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 16 | 2,873 contacts → | ||||
Partial evidence “Ampath provides comprehensive support services to the incorporated Pathology Laboratory practices of Drs Du Buisson, Kramer, Swart, Bouwer Inc Our primary goal is to provide…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 17 | 2,823 contacts → | ||||
Indirect evidence “Why is Thyrocare more than just a workplace?” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 18 | 2,807 contacts → | ||||
Indirect evidence “We believe that every human being deserves to know the truth about their inner health.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 19 | 2,768 contacts → | ||||
Strong evidence “ARUP Laboratories is a national clinical and anatomic pathology reference laboratory and a worldwide leader in innovative laboratory research and development.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 20 | 2,718 contacts → | ||||
Partial evidence “Myriad Genetics is a leading molecular diagnostic testing and precision medicine company dedicated to advancing health and well-being for all.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 21 | 2,350 contacts → | ||||
Strong evidence “We are one of Europe’s leading suppliers of clinical laboratory testing and medical diagnostic imaging services to private and public healthcare providers, local governments…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 22 | 2,228 contacts → | ||||
Indirect evidence “Pace® Science and Technology Company makes the world a safer, healthier place.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 23 | 2,127 contacts → | ||||
Strong evidence “PathCare Laboratories PathCare is a network of pathology laboratories that provide testing of specimens, primarily for medical diagnostic purposes.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 24 | 2,055 contacts → | ||||
Indirect evidence “Medicover is a leading international provider of healthcare and diagnostic services, headquartered in Sweden and listed on Nasdaq Stockholm.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 25 | 1,980 contacts → | ||||
Partial evidence “Premier groupement de laboratoires détenu et dirigé exclusivement par des biologistes, dont la connaissance métier et le professionnalisme constituent sa force.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: clinical laboratory testing companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names clinical laboratory testing companies.
- Partial evidence
- Its own public description names part of clinical laboratory testing companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name clinical laboratory testing companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 11,475 clinical laboratory testing companies worldwide
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 124,194 reachable decision-makers.
Free signup · no credit card
Clinical laboratory testing companies worldwide at a glance
As of Sep 16, 2026Companies by employee count
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among clinical laboratory testing companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- Coverage
- 38 countries, largest first: the United States, Brazil, India, Italy, Mexico, Germany, the United Kingdom, France, Argentina, Spain and 28 more. Country and city lists for clinical laboratory testing companies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “clinical laboratory testing companies”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names clinical laboratory testing companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among clinical laboratory testing companies, and records with no verified work email.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- 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 listed company carries at least one verified work email, 124,194 across the full list. 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 16, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Clinical laboratory testing companies by location
57 lists · largest firstEvery Clinical laboratory testing companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Clinical laboratory testing companies based in the United States2,681
- Clinical laboratory testing companies based in Brazil2,267
- Clinical laboratory testing companies based in India1,602
- Clinical laboratory testing companies based in Italy495
- Clinical laboratory testing companies based in Mexico423
- Clinical laboratory testing companies based in Germany351
- Clinical laboratory testing companies based in the United Kingdom275
- Clinical laboratory testing companies based in France235
- Clinical laboratory testing companies based in Argentina233
- Clinical laboratory testing companies based in Spain228
- Clinical laboratory testing companies based in Colombia195
- Clinical laboratory testing companies based in Türkiye182
- Clinical laboratory testing companies based in Canada176
- Clinical laboratory testing companies based in Chile144
- Clinical laboratory testing companies based in Pakistan141
- Clinical laboratory testing companies based in Nigeria137
- Clinical laboratory testing companies based in Peru126
- Clinical laboratory testing companies based in Australia118
- Clinical laboratory testing companies based in Indonesia116
- Clinical laboratory testing companies based in Greece102
- Clinical laboratory testing companies based in Poland100
- Clinical laboratory testing companies based in the Netherlands98
- Clinical laboratory testing companies based in South Africa96
- Clinical laboratory testing companies based in the United Arab Emirates95
- Clinical laboratory testing companies based in Egypt93
- Clinical laboratory testing companies based in the Philippines93
- Clinical laboratory testing companies based in Switzerland89
- Clinical laboratory testing companies based in Ecuador83
- Clinical laboratory testing companies based in Portugal78
- Clinical laboratory testing companies based in Malaysia72
- Clinical laboratory testing companies based in Saudi Arabia71
- Clinical laboratory testing companies based in Belgium55
- Clinical laboratory testing companies based in Romania46
- Clinical laboratory testing companies based in Czechia42
- Clinical laboratory testing companies based in Sweden40
- Clinical laboratory testing companies based in Austria36
- Clinical laboratory testing companies based in Israel31
- Clinical laboratory testing companies based in Hong Kong30
Cities
- Clinical laboratory testing companies based in Sao Paulo, Brazil174
- Clinical laboratory testing companies based in New Delhi, India118
- Clinical laboratory testing companies based in Hyderabad, India101
- Clinical laboratory testing companies based in Mumbai, India99
- Clinical laboratory testing companies based in Delhi, India63
- Clinical laboratory testing companies based in Belo Horizonte, Brazil61
- Clinical laboratory testing companies based in Houston, United States57
- Clinical laboratory testing companies based in Chennai, India56
- Clinical laboratory testing companies based in Ahmedabad, India53
- Clinical laboratory testing companies based in Bangalore, India52
- Clinical laboratory testing companies based in San Diego, United States46
- Clinical laboratory testing companies based in New York, United States42
- Clinical laboratory testing companies based in Rio De Janeiro, Brazil39
- Clinical laboratory testing companies based in Irvine, United States38
- Clinical laboratory testing companies based in Dallas, United States34
- Clinical laboratory testing companies based in Los Angeles, United States30
- Clinical laboratory testing companies based in Atlanta, United States28
- Clinical laboratory testing companies based in Miami, United States28
- Clinical laboratory testing companies based in San Antonio, United States27
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names clinical laboratory testing companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many clinical laboratory testing companies are there worldwide?
RevenueBase identified 11,475 clinical laboratory testing companies worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Labcorp, headquartered in Burlington, tops this list with the largest team on record.
Which country has the most clinical laboratory testing companies?
The United States leads with 2,681 companies, followed by Brazil (2,267) and India (1,602). Every clinical laboratory testing companies list by country and city is linked on this page.
Which city has the most clinical laboratory testing companies?
Sao Paulo leads with 174 headquartered companies, followed by New Delhi (118) and Hyderabad (103).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 124,194 verified decision-maker contacts tracked across these 11,475 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 16, 2026.
Ready to reach these companies? Verified emails and direct dials for all 11,475 clinical laboratory testing companies worldwide. Start with a free account, no credit card.
Download this list →Related lists
Browse the directory
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 Smart Search, 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.