Company lists · Data refreshed September 2026

Top 25 Pathology laboratories based in the United States

Name: Pathology 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 20, 2026 1,170 companies tracked

RevenueBase identified 1,170 pathology laboratories headquartered in the United States as of September 2026 and tracks 119,748 professional contacts across them, including 31,641 with verified work emails. Houston is the largest hub.

This list covers pathology laboratories headquartered in the United States, 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 20, 2026.

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 20, 2026 86% judged on-target in blind review

1,170Companies

119,748Contacts tracked

31,641Verified emails

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The 25 largest pathology laboratories based in the United States

Ranked by team size

Top 25 of 1,170 pathology laboratories based in the United States, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to pathology 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 20, 2026	10001+	38,427 contacts →
	Indirect evidence “Clear and confident health care decisions begin with questions.” Source: RevenueBase Database · checked Sep 20, 2026
2	Quest Diagnostics	Indirect evidence	Secaucus, NJ, United StatesHQ checked Sep 20, 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 20, 2026
3	Beckman Coulter Diagnostics	Indirect evidence	Brea, CA, United StatesHQ checked Sep 20, 2026	10001+	10,069 contacts →
	Indirect 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 20, 2026
4	Arup Laboratories	Strong evidence	Salt Lake City, UT, United StatesHQ checked Sep 20, 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 20, 2026
5	Bioreference	Indirect evidence	Elmwood Park, NJ, United StatesHQ checked Sep 20, 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 20, 2026
6	Clinical Pathology Laboratories	Strong evidence	Austin, TX, United StatesHQ checked Sep 20, 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 20, 2026
7	Sonora Quest Laboratories Laboratory Sciences Of Arizona	Partial evidence	Phoenix, AZ, United StatesHQ checked Sep 20, 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 20, 2026
8	College Of American Pathologists CAP	Partial evidence	Northfield, IL, United StatesHQ checked Sep 20, 2026	501-1,000	1,193 contacts →
	Partial evidence “The College of American Pathologists (CAP) is the premier organization of board-certified pathologists dedicated to fostering and advocating excellence in the practice of…” Source: RevenueBase Database · checked Sep 20, 2026
9	Pathgroup	Partial evidence	Brentwood, TN, United StatesHQ checked Sep 20, 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 20, 2026
10	Veracyte, INC	Indirect evidence	South San Francisco, CA, United StatesHQ checked Sep 20, 2026	501-1,000	675 contacts →
	Indirect evidence “Veracyte is a global diagnostics company that empowers clinicians with the high-value insights they need to guide and assure patients at pivotal moments in the race to diagnose…” Source: RevenueBase Database · checked Sep 20, 2026
11	Tricore Reference Laboratories	Indirect evidence	Albuquerque, NM, United StatesHQ checked Sep 20, 2026	1,001-5,000	675 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 20, 2026
12	Solstas LAB Partners	Partial evidence	Greensboro, NC, United StatesHQ checked Sep 20, 2026	1,001-5,000	649 contacts →
	Partial evidence “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.” Source: RevenueBase Database · checked Sep 20, 2026
13	Alverno Laboratories	Partial evidence	Hammond, IN, United StatesHQ checked Sep 20, 2026	1,001-5,000	619 contacts →
	Partial evidence “Alverno Laboratories manages 32 hospital laboratories and provides laboratory services to two free standing emergency departments and thousands of physician offices and other…” Source: RevenueBase Database · checked Sep 20, 2026
14	Sonic Healthcare USA	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 20, 2026	5,001-10,000	614 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 20, 2026
15	HNL LAB Medicine	Indirect evidence	Allentown, PA, United StatesHQ checked Sep 20, 2026	1,001-5,000	563 contacts →
	Indirect evidence “Our Vision is To create a future where every person has the clarity and insight to live healthier.” Source: RevenueBase Database · checked Sep 20, 2026
16	American Health Associates	Indirect evidence	Davie, FL, United StatesHQ checked Sep 20, 2026	1,001-5,000	459 contacts →
	Indirect evidence “American Health Associates is the largest provider of clinical laboratory services to long term care in the United States.” Source: RevenueBase Database · checked Sep 20, 2026
17	Clinical Reference Laboratory	Indirect evidence	Lenexa, KS, United StatesHQ checked Sep 20, 2026	501-1,000	457 contacts →
	Indirect evidence “CRL was originally founded as Enzyme Technologies in 1979 with our focus on clinical research and development.” Source: RevenueBase Database · checked Sep 20, 2026
18	ACM Global Laboratories	Partial evidence	Rochester, NY, United StatesHQ checked Sep 20, 2026	1,001-5,000	446 contacts →
	Partial evidence “ACM Global Laboratories, an affiliate of Rochester Regional Health in Rochester, New York, is a recognized leader global clinical trial testing services.” Source: RevenueBase Database · checked Sep 20, 2026
19	Medical Diagnostic Laboratories MDL	Partial evidence	Hamilton, NJ, United StatesHQ checked Sep 20, 2026	501-1,000	436 contacts →
	Partial evidence “Medical Diagnostic Laboratories (MDL), founded in 1997, serves primarily as a reference laboratory for Polymerase Chain Reaction (PCR) based testing to physicians, laboratories…” Source: RevenueBase Database · checked Sep 20, 2026
20	Fulgent Genetics	Indirect evidence	El Monte, CA, United StatesHQ checked Sep 20, 2026	1,001-5,000	435 contacts →
	Indirect evidence “Our mission is to develop flexible and affordable diagnostics and therapeutics that improve the everyday lives of those around us.” Source: RevenueBase Database · checked Sep 20, 2026
21	Mako Medical	Partial evidence	Raleigh, NC, United StatesHQ checked Sep 20, 2026	1,001-5,000	433 contacts →
	Partial evidence “Mako Medical Laboratories, a proud member of The Health Alliance, is redefining how laboratories support patients and healthcare professionals.” Source: RevenueBase Database · checked Sep 20, 2026
22	Compunet Clinical Laboratories	Indirect evidence	Moraine, OH, United StatesHQ checked Sep 20, 2026	501-1,000	420 contacts →
	Indirect evidence “We are a clinical diagnostic laboratory offering over accessible, responsive, and reliable lab tests for physicians, hospitals, patients, and employers in our communities.” Source: RevenueBase Database · checked Sep 20, 2026
23	PAML	Strong evidence	Spokane, WA, United StatesHQ checked Sep 20, 2026	1,001-5,000	412 contacts →
	Strong evidence “Pathology Associates Medical Laboratories (PAML) is a full-service medical reference laboratory located in Spokane, WA.” Source: RevenueBase Database · checked Sep 20, 2026
24	Healthtrackrx	Indirect evidence	Louisville, KY, United StatesHQ checked Sep 20, 2026	201-500	395 contacts →
	Indirect evidence “HealthTrack, formerly known as HealthTrackRx, is a nationwide diagnostics company delivering next-morning molecular testing solutions for urgent care and walk-in clinics, women’s…” Source: RevenueBase Database · checked Sep 20, 2026
25	Diagnostic Laboratory Services	Partial evidence	Aiea, HI, United StatesHQ checked Sep 20, 2026	1,001-5,000	377 contacts →
	Partial evidence “DLS is proud to be Hawaii’s largest locally-owned clinical and anatomic pathology testing laboratory with a team of over dedicated professionals.” Source: RevenueBase Database · checked Sep 20, 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: pathology 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 pathology laboratories.
Partial evidence: Its own public description names part of pathology laboratories, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name pathology 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 1,170 pathology laboratories based in the United States

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Pathology laboratories based in the United States at a glance

As of Sep 20, 2026

26.4%Verified-email coverage

102.3Average contacts per company

11-50Median size (employees)

2.4%Largest-city concentration · Houston

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

326

11-50

445

51-200

259

201-500

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 1,170 companies.

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 pathology 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.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “pathology 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 pathology 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 pathology laboratories, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
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, 31,641 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 20, 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.

Pathology laboratories by metro

Pathology laboratories in Houston28

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 pathology 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 pathology laboratories are there based in the United States?

RevenueBase identified 1,170 pathology laboratories headquartered in the United States 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 city has the most pathology laboratories?

Houston leads with 28 headquartered companies, followed by Tampa (17) and San Antonio (16).

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 31,641 verified decision-maker contacts tracked across these 1,170 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 20, 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.