Company lists · Data refreshed September 2026

Top 25 Oncology clinical laboratories worldwide

Name: Oncology clinical laboratories worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 3,744 companies tracked

RevenueBase identified 3,744 oncology clinical laboratories worldwide as of September 2026 and tracks 226,167 professional contacts across them, including 58,564 with verified work emails and 0 with mobile numbers. Brazil is the largest market and Sao Paulo the largest hub.

This list covers oncology clinical laboratories 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 17, 2026. Country and city lists for oncology clinical laboratories 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 17, 2026 86% judged on-target in blind review

3,744Companies

226,167Contacts tracked

58,564Verified emails

0Mobile numbers

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The 25 largest oncology clinical laboratories worldwide

Ranked by team size

Top 25 of 3,744 oncology clinical laboratories worldwide, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to oncology clinical laboratories: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Labcorp	Indirect evidence	Burlington, NC, United StatesHQ checked Sep 17, 2026	10001+	38,427 contacts →
	Indirect evidence “Clear and confident health care decisions begin with questions.” Source: RevenueBase Database · checked Sep 17, 2026
2	Quest Diagnostics	Indirect evidence	Secaucus, NJ, United StatesHQ checked Sep 17, 2026	10001+	27,884 contacts →
	Indirect evidence “Quest Diagnostics (NYSE: DGX) empowers people to take action to improve health outcomes.” Source: RevenueBase Database · checked Sep 17, 2026
3	DASA	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 17, 2026	10001+	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 17, 2026
4	Natera	Partial evidence	Austin, TX, United StatesHQ checked Sep 17, 2026	5,001-10,000	5,354 contacts →
	Partial 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 17, 2026
5	Lancet Laboratories	Partial evidence	Johannesburg, South AfricaHQ checked Sep 17, 2026	5,001-10,000	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 17, 2026
6	Guardant Health	Indirect evidence	Palo Alto, CA, United StatesHQ checked Sep 17, 2026	1,001-5,000	3,321 contacts →
	Indirect evidence “Guardant Health is a leading precision medicine company focused on guarding wellness and giving every person more time free from cancer.” Source: RevenueBase Database · checked Sep 17, 2026
7	Ampath Laboratories	Indirect evidence	Centurion, South AfricaHQ checked Sep 17, 2026	1,001-5,000	2,873 contacts →
	Indirect 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 17, 2026
8	Metropolis Healthcare	Indirect evidence	Behind Glaxo, IndiaHQ checked Sep 17, 2026	1,001-5,000	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 17, 2026
9	Arup Laboratories	Strong evidence	Salt Lake City, UT, United StatesHQ checked Sep 17, 2026	1,001-5,000	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 17, 2026
10	Myriad Genetics	Indirect evidence	Salt Lake City, UT, United StatesHQ checked Sep 17, 2026	1,001-5,000	2,718 contacts →
	Indirect 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 17, 2026
11	Pathcare	Partial evidence	Cape Town, South AfricaHQ checked Sep 17, 2026	1,001-5,000	2,127 contacts →
	Partial 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 17, 2026
12	Foundation Medicine	Indirect evidence	Boston, MA, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,747 contacts →
	Indirect evidence “Foundation Medicine is a global, patient-focused precision medicine company delivering high-quality, transformative diagnostic solutions in cancer and other diseases.” Source: RevenueBase Database · checked Sep 17, 2026
13	Neogenomics Laboratories	Indirect evidence	Fort Myers, FL, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,678 contacts →
	Indirect evidence “Our vision: A world where every cancer treatment decision is as personal as the patient.” Source: RevenueBase Database · checked Sep 17, 2026
14	Bioreference	Indirect evidence	Elmwood Park, NJ, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,610 contacts →
	Indirect evidence “For more than four decades, BioReference has built a legacy based on scientific excellence, innovation and world-class service in laboratory testing solutions.” Source: RevenueBase Database · checked Sep 17, 2026
15	Clinical Pathology Laboratories	Strong evidence	Austin, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,528 contacts →
	Strong evidence “Clinical Pathology Laboratories (CPL) is a medically-led company dating back to 1948.” Source: RevenueBase Database · checked Sep 17, 2026
16	Sonora Quest Laboratories Laboratory Sciences Of Arizona	Partial evidence	Phoenix, AZ, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,222 contacts →
	Partial evidence “Sonora Quest Laboratories, a subsidiary of Laboratory Sciences of Arizona, is an Arizona-based joint venture between Banner Health and Quest Diagnostics (NYSE: DGX) that makes up…” Source: RevenueBase Database · checked Sep 17, 2026
17	Pathgroup	Partial evidence	Brentwood, TN, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,098 contacts →
	Partial evidence “Founded in 1965, PathGroup is a premier provider of anatomic, clinical and molecular pathology services, as well as one of the largest providers of women’s health services in the…” Source: RevenueBase Database · checked Sep 17, 2026
18	Sullivan Nicolaides Pathology	Partial evidence	Bowen Hills, AustraliaHQ checked Sep 17, 2026	1,001-5,000	995 contacts →
	Partial evidence “Sullivan Nicolaides Pathology is one of Australia’s largest and most respected diagnostic testing laboratories, regarded for our expertise in esoteric as much as routine testing.” Source: RevenueBase Database · checked Sep 17, 2026
19	Ambry Genetics	Partial evidence	Aliso Viejo, CA, United StatesHQ checked Sep 17, 2026	501-1,000	957 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 17, 2026
20	Medgenome	Indirect evidence	Bangalore, IndiaHQ checked Sep 17, 2026	1,001-5,000	954 contacts →
	Indirect evidence “MedGenome is a global genomics and precision diagnostics company focused on enabling accurate, early and actionable diagnosis through advanced genomic science.” Source: RevenueBase Database · checked Sep 17, 2026
21	Neuberg Diagnostics	Indirect evidence	Chennai, IndiaHQ checked Sep 17, 2026	501-1,000	926 contacts →
	Indirect evidence “Neuberg Diagnostics, headquartered in Chennai, is one of India’s leading diagnostic service providers, with its presence in India, UAE, South Africa and USA.” Source: RevenueBase Database · checked Sep 17, 2026
22	Biomega Medicina Diagnóstica	Partial evidence	Barueri, BrazilHQ checked Sep 17, 2026	1,001-5,000	908 contacts →
	Partial evidence “A Biomega traz em seu DNA mais de 30 anos de experiência na área da saúde, com foco na excelência em prestação de serviços laboratoriais com alta tecnologia, rapidez e eficiência…” Source: RevenueBase Database · checked Sep 17, 2026
23	Apollo Diagnostics	Indirect evidence	Chennai, IndiaHQ checked Sep 17, 2026	1,001-5,000	865 contacts →
	Indirect evidence “Apollo Diagnostics is part of the Apollo Health and Lifestyle Limited services brought to you by the illustrious Apollo Group.” Source: RevenueBase Database · checked Sep 17, 2026
24	Cellcarta	Indirect evidence	Montreal, QC, CanadaHQ checked Sep 17, 2026	501-1,000	760 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 17, 2026
25	Unipath Specialty Laboratory	Indirect evidence	Ahmedabad, IndiaHQ checked Sep 17, 2026	1,001-5,000	717 contacts →
	Indirect evidence “Over the past 15 years, Unipath Specialty Laboratory Limited (USLL) has successfully established itself as one of the leading diagnostics companies in India.” Source: RevenueBase Database · checked Sep 17, 2026

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: oncology clinical laboratories. 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 oncology clinical laboratories.
Partial evidence: Its own public description names part of oncology clinical laboratories, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name oncology clinical laboratories. 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 3,744 oncology clinical laboratories worldwide

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Oncology clinical laboratories worldwide at a glance

As of Sep 17, 2026

25.9%Verified-email coverage

60.4Average contacts per company

11-50Median size (employees)

1.5%Largest-city concentration · Sao Paulo

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

1,296

11-50

1,380

51-200

645

201-500

214

501-1,000

1,001-5,000

5,001-10,000

10001+

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 oncology clinical laboratories, 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: 20 countries, largest first: Brazil, the United States, India, Mexico, Germany, Italy, Argentina, Spain, France, Colombia and 10 more. Country and city lists for oncology clinical laboratories are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “oncology clinical laboratories”. 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 oncology clinical laboratories), 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 oncology clinical laboratories, 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, 58,564 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 17, 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.

Oncology clinical laboratories by location

20 lists · largest first

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

Countries

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 oncology clinical laboratories, 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 oncology clinical laboratories are there worldwide?

RevenueBase identified 3,744 oncology clinical laboratories 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 oncology clinical laboratories?

Brazil leads with 1,098 companies, followed by the United States (963) and India (493). Every oncology clinical laboratories list by country and city is linked on this page.

Which city has the most oncology clinical laboratories?

Sao Paulo leads with 56 headquartered companies, followed by Houston (29) and Hyderabad (28).

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 58,564 verified decision-maker contacts tracked across these 3,744 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 17, 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 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.