Company lists · Data refreshed September 2026

Top 25 Medical testing laboratories based in the United States

Name: Medical testing laboratories based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 1,816 companies tracked

RevenueBase identified 1,816 company matches for medical testing laboratories associated with the United States as of September 2026 and tracks 201,868 professional contacts across them, including 52,993 with verified work emails. Houston is the largest hub.

This list covers company matches for medical testing laboratories associated with the United States, 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 17, 2026.

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 17, 2026 How this list was built

1,816Companies

201,868Contacts tracked

52,993Verified emails

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The 25 largest medical testing laboratories based in the United States

Ranked by team size

Top 25 of 1,816 company matches for medical testing laboratories based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 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	Agilent Technologies	Exact match	Santa Clara, CA, United StatesHQ recorded Sep 17, 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 17, 2026 · View company records in RevenueBase
2	Labcorp	Exact match	Burlington, NC, United StatesHQ recorded Sep 17, 2026	10001+	38,427 contacts →
	Exact match “Clear and confident health care decisions begin with questions.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3	Quest Diagnostics	Exact match	Secaucus, NJ, United StatesHQ recorded Sep 17, 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 17, 2026 · View company records in RevenueBase
4	Beckman Coulter Diagnostics	Exact match	Brea, CA, United StatesHQ recorded Sep 17, 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 17, 2026 · View company records in RevenueBase
5	Waters Corporation	Exact match	Milford, MA, United StatesHQ recorded Sep 17, 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 17, 2026 · View company records in RevenueBase
6	Cepheid	Exact match	Sunnyvale, CA, United StatesHQ recorded Sep 17, 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 17, 2026 · View company records in RevenueBase
7	Arup Laboratories	Exact match	Salt Lake City, UT, United StatesHQ recorded Sep 17, 2026	1,001-5,000	2,768 contacts →
	Exact match “ARUP Laboratories is a national clinical and anatomic pathology reference laboratory and a worldwide leader in innovative laboratory research and development.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	Myriad Genetics	Exact match	Salt Lake City, UT, United StatesHQ recorded Sep 17, 2026	1,001-5,000	2,718 contacts →
	Exact match “Myriad Genetics is a leading molecular diagnostic testing and precision medicine company dedicated to advancing health and well-being for all.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	Bioreference	Exact match	Elmwood Park, NJ, United StatesHQ recorded Sep 17, 2026	1,001-5,000	1,610 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 · Sep 17, 2026 · View company records in RevenueBase
10	Clinical Pathology Laboratories	Exact match	Austin, TX, United StatesHQ recorded Sep 17, 2026	1,001-5,000	1,528 contacts →
	Exact match “Clinical Pathology Laboratories (CPL) is a medically-led company dating back to 1948.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11	Examone, A Quest Diagnostics Company	Exact match	Lenexa, KS, United StatesHQ recorded Sep 17, 2026	1,001-5,000	1,369 contacts →
	Exact match “ExamOne has provided a robust portfolio of laboratory, paramedical and data solutions since 1972, giving it a great deal of understanding about the needs of life insurance and…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12	Sysmex America, INC	Exact match	Lincolnshire, IL, United StatesHQ recorded Sep 17, 2026	1,001-5,000	1,313 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13	Sonora Quest Laboratories Laboratory Sciences Of Arizona	Exact match	Phoenix, AZ, United StatesHQ recorded Sep 17, 2026	1,001-5,000	1,222 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 · Sep 17, 2026 · View company records in RevenueBase
14	Pathgroup	Exact match	Brentwood, TN, United StatesHQ recorded Sep 17, 2026	1,001-5,000	1,098 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	Tridentcare	Exact match	Sparks, MD, United StatesHQ recorded Sep 17, 2026	1,001-5,000	868 contacts →
	Exact match “TridentCare is the leading portable diagnostic services solution for a variety of healthcare markets, delivering quality services at our customers’ locations nationwide.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	Nelson Labs	Exact match	Salt Lake City, UT, United StatesHQ recorded Sep 17, 2026	501-1,000	775 contacts →
	Exact match “Nelson Labs is a global leader in microbiological and analytical chemistry testing and advisory services for the medical device and pharmaceutical industries.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	Emsl Analytical, INC	Exact match	Cinnaminson, NJ, United StatesHQ recorded Sep 17, 2026	501-1,000	719 contacts →
	Exact match “As the nation's leading environmental testing firm, EMSL's network of nationwide laboratories has been providing quality analytical services since 1981.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	Aegis Sciences Corporation	Exact match	Nashville, TN, United StatesHQ recorded Sep 17, 2026	501-1,000	690 contacts →
	Exact match “Founded in 1990, Aegis Sciences Corporation is a forensic toxicology and healthcare laboratory that provides science-driven drug testing and consulting services based in…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19	Meridian Bioscience INC	Exact match	Cincinnati, OH, United StatesHQ recorded Sep 17, 2026	501-1,000	688 contacts →
	Exact match “Meridian is a fully integrated life science company that develops, manufactures, markets and distributes a broad range of innovative diagnostic test kits, rare reagents, specialty…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	Tricore Reference Laboratories	Exact match	Albuquerque, NM, United StatesHQ recorded Sep 17, 2026	1,001-5,000	675 contacts →
	Exact match “TriCore is a community-based, independent, clinical reference laboratory that provides full-service, state-of-the-art laboratory tests to health care professionals and their…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	Solstas LAB Partners	Exact match	Greensboro, NC, United StatesHQ recorded Sep 17, 2026	1,001-5,000	649 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 · Sep 17, 2026 · View company records in RevenueBase
22	Alverno Laboratories	Exact match	Hammond, IN, United StatesHQ recorded Sep 17, 2026	1,001-5,000	619 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 · Sep 17, 2026 · View company records in RevenueBase
23	Sonic Healthcare USA	Exact match	Dallas, TX, United StatesHQ recorded Sep 17, 2026	5,001-10,000	614 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 · Sep 17, 2026 · View company records in RevenueBase
24	HNL LAB Medicine	Exact match	Allentown, PA, United StatesHQ recorded Sep 17, 2026	1,001-5,000	563 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 · Sep 17, 2026 · View company records in RevenueBase
25	Microbac Laboratories, INC	Exact match	Pittsburgh, PA, United StatesHQ recorded Sep 17, 2026	501-1,000	494 contacts →
	Exact match “Companies of all sizes partner with Microbac to test the quality, safety, and performance of their products and operations.” Recorded in the RevenueBase company graph · Sep 17, 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 “medical testing laboratories”. 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 1,816 medical testing laboratories based in the United States

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Medical testing laboratories based in the United States at a glance

As of Sep 17, 2026

26.3%Verified-email coverage

111.2Average contacts per company

11-50Median size (employees)

2.4%Largest-city concentration · Houston

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

569

11-50

687

51-200

365

201-500

100

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 1,816 companies.

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.
What qualifies: Company records associated with the United States whose business descriptions match “medical 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 52,993 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 17, 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.

Medical testing laboratories by metro

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

How many medical testing laboratories are there based in the United States?

RevenueBase identified 1,816 company matches for medical testing laboratories associated with the United States 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?

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

Which city has the most medical testing laboratories?

Houston leads with 44 company records, followed by New York (28) and Irvine (27).

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 52,993 professional contacts with verified work emails tracked across these 1,816 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 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 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.