Company lists · Data refreshed November 2026

Top 25 Clia certified testing laboratories worldwide

RevenueBase identified 2,838 company matches for clia certified testing laboratories worldwide as of November 2026 and tracks 133,713 professional contacts across them, including 18,087 with verified work emails. Brazil is the largest market and Sao Paulo the largest hub.

This list covers company matches for clia certified testing laboratories 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 clia certified testing laboratories 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
2,838Companies
133,713Contacts tracked
18,087Verified emails
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The 25 largest clia certified testing laboratories worldwide

Ranked by team size
Top 25 of 2,838 company matches for clia certified testing laboratories 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 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
2Exact 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
3Exact 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
4Exact 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
5Exact 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
6Exact 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
7Exact matchLahore, PakistanHQ recorded Nov 6, 20261,001-5,0001,310 contacts →

Exact match

“Established in 1983, Chughtai Lab is the leading diagnostic lab in Pakistan.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchPhoenix, AZ, United StatesHQ recorded Nov 6, 20261,001-5,0001,295 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchBowen Hills, AustraliaHQ recorded Nov 6, 20261,001-5,0001,062 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchChennai, IndiaHQ recorded Nov 6, 202610001+1,006 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchSanto Domingo Oeste., Dominican RepublicHQ recorded Nov 6, 20261,001-5,000823 contacts →

Exact match

“Referencia Laboratorio Clínico, empresa dedicada al servicio de la salud, tiene como objetivo la obtención de un resultado de análisis clínico confiable, preciso y oportuno…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchLyon, FranceHQ recorded Nov 6, 2026501-1,000750 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 · Nov 6, 2026 · View company records in RevenueBase
13Exact matchGurgaon, IndiaHQ recorded Nov 6, 20261,001-5,000747 contacts →

Exact match

“Oncquest Laboratories Ltd is known for its excellence in Clinical Diagnostics.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchSanto Domingo, Dominican RepublicHQ recorded Nov 6, 20261,001-5,000696 contacts →

Exact match

“Por más de 60 años, en Amadita Laboratorio Clínico nos hemos dedicado a mejorar la salud y el bienestar en la República Dominicana, sirviendo como un ancla de la precisión médica.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchGreensboro, GA, United StatesHQ recorded Nov 6, 20261,001-5,000692 contacts →

Exact match

“Solstas Lab Partners has become one of the nation’s fastest-growing and largest full-service laboratories because we understand that our business is more than just test results.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchDallas, VA, United StatesHQ recorded Nov 6, 20265,001-10,000640 contacts →

Exact match

“Sonic Healthcare USA is a subsidiary of Sonic Healthcare Limited, one of the world's largest medical diagnostics companies, providing laboratory services to medical practitioners…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchHammond, IL, United StatesHQ recorded Nov 6, 20261,001-5,000629 contacts →

Exact match

“Alverno Laboratories manages 32 hospital laboratories and provides laboratory services to two free standing emergency departments and thousands of physician offices and other…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchGiza, EgyptHQ recorded Nov 6, 20261,001-5,000624 contacts →

Exact match

“al mokhtabar is the largest private medical laboratory testing company in the Middle East, providing diagnostic laboratory services, pathological and clinical tests for medical…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchAllentown, PA, United StatesHQ recorded Nov 6, 20261,001-5,000622 contacts →

Exact match

“Our Vision is To create a future where every person has the clarity and insight to live healthier.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchAmman, JordanHQ recorded Nov 6, 2026201-500595 contacts →

Exact match

“Biolab is a group of medical diagnostic laboratories that offer a full range of laboratory services in Jordan.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchNavi Mumbai, IndiaHQ recorded Nov 6, 2026201-500583 contacts →

Exact match

“At Lupin Diagnostics, we are dedicated to providing high quality testing with accurate results.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchHyderabad, IndiaHQ recorded Nov 6, 2026501-1,000508 contacts →

Exact match

“PathCare Labs(P)Limited is one of the top Diagnostic Service provider on the horizon with a promise to ensure Quality, Reliability and Customer Care.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchLenexa, KS, United StatesHQ recorded Nov 6, 2026501-1,000503 contacts →

Exact match

“CRL was originally founded as Enzyme Technologies in 1979 with our focus on clinical research and development.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchP.o. Box 92323, United Arab EmiratesHQ recorded Nov 6, 2026201-500478 contacts →

Exact match

“National Reference Laboratory (NRL) is a partner in Mubadala Health’s integrated network of world-class healthcare providers.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchBelo Horizonte, BrazilHQ recorded Nov 6, 2026501-1,000476 contacts →

Exact match

“Com 75 anos de história, o Laboratório São Marcos é uma das empresas de saúde que mais cresce no país.”

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

Showing 25 of 2,838 clia certified testing laboratories worldwide

See the full list, filter by size, metro and specialty, and access 18,087 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Clia certified testing laboratories worldwide at a glance

As of Nov 6, 2026
13.5%Verified-email coverage
47.1Average contacts per company
11-50Median size (employees)
0.8%Largest-city concentration · Sao Paulo
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
870
11-50
1,072
51-200
544
201-500
190
501-1,000
55
1,001-5,000
50
5,001-10,000
9
10001+
10

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 clia certified testing laboratories are linked below.
What qualifies
Company records worldwide whose business descriptions match “clia certified testing laboratories” 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 18,087 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.

Clia certified testing laboratories by location

9 lists · largest first

Every Clia certified testing 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 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 “clia certified testing laboratories”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many clia certified testing laboratories are there worldwide?

RevenueBase identified 2,838 company matches for clia certified testing laboratories 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?

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

Which country has the most clia certified testing laboratories?

Brazil leads with 682 companies, followed by the United States (607) and India (208). Every clia certified testing laboratories list by country and city is linked on this page.

Which city has the most clia certified testing laboratories?

Sao Paulo leads with 24 company records, followed by Houston (20) and New Delhi (16).

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 18,087 professional contacts with verified work emails tracked across these 2,838 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.