Company lists · Data refreshed November 2026

Top 25 Diagnostic testing services worldwide

RevenueBase identified 8,911 company matches for diagnostic testing services worldwide as of November 2026 and tracks 423,890 professional contacts across them, including 84,653 with verified work emails. Brazil is the largest market and Sao Paulo the largest hub.

This list covers company matches for diagnostic testing services 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 November 6, 2026. Country and city lists for diagnostic testing services 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 Nov 6, 2026 How this list was built
8,911Companies
423,890Contacts tracked
84,653Verified emails
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The 25 largest diagnostic testing services worldwide

Ranked by team size
Top 25 of 8,911 company matches for diagnostic testing services worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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 matchBurlington, NC, United StatesHQ recorded Nov 6, 202610001+40,243 contacts →

Exact match

“Clear and confident health care decisions begin with questions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchSecaucus, NJ, United StatesHQ recorded Nov 6, 202610001+30,147 contacts →

Exact match

“Quest Diagnostics (NYSE: DGX) empowers people to take action to improve health outcomes.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchSao Paulo, BrazilHQ recorded Nov 6, 202610001+18,422 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 · Nov 6, 2026 · View company records in RevenueBase
4Exact matchLuxembourgHQ recorded Nov 6, 202610001+12,649 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 · Nov 6, 2026 · View company records in RevenueBase
5Exact matchSão Paulo, BrazilHQ recorded Nov 6, 202610001+11,419 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 · Nov 6, 2026 · View company records in RevenueBase
6Exact matchBrea, CA, United StatesHQ recorded Nov 6, 202610001+10,594 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 · Nov 6, 2026 · View company records in RevenueBase
7Exact matchGurgaon, IndiaHQ recorded Nov 6, 20261,001-5,0005,161 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 · Nov 6, 2026 · View company records in RevenueBase
8Exact matchJohannesburg, South AfricaHQ recorded Nov 6, 20265,001-10,0004,563 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 · Nov 6, 2026 · View company records in RevenueBase
9Exact matchUnited StatesHQ recorded Nov 6, 20265,001-10,0003,768 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 · Nov 6, 2026 · View company records in RevenueBase
10Exact matchToronto, ON, CanadaHQ recorded Nov 6, 20265,001-10,0003,586 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 · Nov 6, 2026 · View company records in RevenueBase
11Exact matchCuliacán, MexicoHQ recorded Nov 6, 20265,001-10,0003,565 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchCenturion, South AfricaHQ recorded Nov 6, 20261,001-5,0003,006 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchNavi Mumbai, IndiaHQ recorded Nov 6, 20261,001-5,0002,994 contacts →

Exact match

“Why is Thyrocare more than just a workplace?”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchBehind Glaxo, IndiaHQ recorded Nov 6, 20261,001-5,0002,978 contacts →

Exact match

“We believe that every human being deserves to know the truth about their inner health.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchGeneva, SwitzerlandHQ recorded Nov 6, 202610001+2,541 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchSt.-ouen, FranceHQ recorded Nov 6, 202610001+2,254 contacts →

Exact match

“Premier groupement de laboratoires détenu et dirigé exclusivement par des biologistes, dont la connaissance métier et le professionnalisme constituent sa force.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchCape Town, South AfricaHQ recorded Nov 6, 20261,001-5,0002,250 contacts →

Exact match

“PathCare Laboratories PathCare is a network of pathology laboratories that provide testing of specimens, primarily for medical diagnostic purposes.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchMumbai, IndiaHQ recorded Nov 6, 20261,001-5,0002,022 contacts →

Exact match

“Incepted in the year 1979, Transasia Bio-Medicals Ltd, is headquartered in Mumbai, India.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchBogotá, ColombiaHQ recorded Nov 6, 20265,001-10,0001,941 contacts →

Exact match

“Somos una organización dedicada a la prestación de servicios de apoyo diagnóstico por medio de imágenes, laboratorio clínico y consulta externa, servicios en donde nos…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchBrampton, ON, CanadaHQ recorded Nov 6, 20261,001-5,0001,749 contacts →

Exact match

“Welcome to Dynacare, the leading provider of comprehensive health and wellness solutions in Canada.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchAustin, TX, United StatesHQ recorded Nov 6, 20261,001-5,0001,630 contacts →

Exact match

“Clinical Pathology Laboratories (CPL) is a medically-led company dating back to 1948.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchHigh Wycombe, United KingdomHQ recorded Nov 6, 20261,001-5,0001,524 contacts →

Exact match

“InHealth is the UK’s largest specialist provider of diagnostic and healthcare solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchElmwood Park, NJ, United StatesHQ recorded Nov 6, 20261,001-5,0001,520 contacts →

Exact match

“For more than four decades, BioReference has built a legacy based on scientific excellence, innovation and world-class service in laboratory testing solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchSao Paulo, BrazilHQ recorded Nov 6, 20261,001-5,0001,466 contacts →

Exact match

“Referência em serviços de saúde, a Afip Medicina Diagnóstica foi um dos primeiros laboratórios brasileiros a receber a certificação de Acreditado Pleno da ONA.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchJakarta Pusat, IndonesiaHQ recorded Nov 6, 20261,001-5,0001,427 contacts →

Exact match

“Prodia Clinical Laboratory was established in Solo on May 7th, 1973 by a number of pharmacy-based scientists.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 8,911 diagnostic testing services worldwide

See the full list, filter by size, metro and specialty, and access 84,653 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Diagnostic testing services worldwide at a glance

As of Nov 6, 2026
20.0%Verified-email coverage
47.6Average contacts per company
11-50Median size (employees)
1.2%Largest-city concentration · Sao Paulo
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
2,842
11-50
3,255
51-200
1,575
201-500
608
501-1,000
228
1,001-5,000
190
5,001-10,000
28
10001+
43

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 testing services are linked below.
What qualifies
Company records worldwide whose business descriptions match “diagnostic testing services” 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 84,653 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 November 6, 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 testing services by location

36 lists · largest first

Every Diagnostic testing services 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 testing services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many diagnostic testing services are there worldwide?

RevenueBase identified 8,911 company matches for diagnostic testing services worldwide as of November 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?

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

Which country has the most diagnostic testing services?

Brazil leads with 1,768 companies, followed by the United States (1,373) and India (1,240). Every diagnostic testing services list by country and city is linked on this page.

Which city has the most diagnostic testing services?

Sao Paulo leads with 110 company records, followed by New Delhi (92) and Mumbai (75).

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 84,653 professional contacts with verified work emails tracked across these 8,911 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 November 6, 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.