Company lists · Data refreshed September 2026

Top 25 Specialty diagnostics laboratories based in the United States

Name: Specialty diagnostics 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 22, 2026 1,726 companies tracked

RevenueBase identified 1,726 specialty diagnostics laboratories headquartered in the United States as of September 2026 and tracks 228,404 professional contacts across them, including 68,576 with verified work emails. Houston is the largest hub.

This list covers specialty diagnostics 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 22, 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 22, 2026 86% judged on-target in blind review

1,726Companies

228,404Contacts tracked

68,576Verified emails

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The 25 largest specialty diagnostics laboratories based in the United States

Ranked by team size

Top 25 of 1,726 specialty diagnostics laboratories based in the United States, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to specialty diagnostics 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	Agilent Technologies	Indirect evidence	Santa Clara, CA, United StatesHQ checked Sep 22, 2026	10001+	48,455 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 22, 2026
2	Labcorp	Indirect evidence	Burlington, NC, United StatesHQ checked Sep 22, 2026	10001+	38,427 contacts →
	Indirect evidence “Clear and confident health care decisions begin with questions.” Source: RevenueBase Database · checked Sep 22, 2026
3	Quest Diagnostics	Partial evidence	Secaucus, NJ, United StatesHQ checked Sep 22, 2026	10001+	27,884 contacts →
	Partial evidence “Quest Diagnostics (NYSE: DGX) empowers people to take action to improve health outcomes.” Source: RevenueBase Database · checked Sep 22, 2026
4	Beckman Coulter Diagnostics	Partial evidence	Brea, CA, United StatesHQ checked Sep 22, 2026	10001+	10,069 contacts →
	Partial 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 22, 2026
5	Illumina	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 22, 2026	5,001-10,000	8,987 contacts →
	Indirect evidence “At Illumina, our goal is to apply innovative technologies and revolutionary assays to the analysis of genetic variation and function, making studies possible that were not even…” Source: RevenueBase Database · checked Sep 22, 2026
6	Waters Corporation	Partial evidence	Milford, MA, United StatesHQ checked Sep 22, 2026	10001+	8,189 contacts →
	Partial evidence “Waters Corporation (NYSE: WAT) is a global leader in life sciences and diagnostics, dedicated to accelerating the benefits of pioneering science through analytical technologies…” Source: RevenueBase Database · checked Sep 22, 2026
7	Natera	Indirect evidence	Austin, TX, United StatesHQ checked Sep 22, 2026	5,001-10,000	5,354 contacts →
	Indirect 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 22, 2026
8	Cepheid	Partial evidence	Sunnyvale, CA, United StatesHQ checked Sep 22, 2026	5,001-10,000	4,445 contacts →
	Partial evidence “Cepheid is dedicated to improving healthcare by pioneering molecular diagnostics that combine speed, accuracy, and flexibility.” Source: RevenueBase Database · checked Sep 22, 2026
9	Life Technologies	Indirect evidence	Waltham, MA, United StatesHQ checked Sep 22, 2026	10001+	3,436 contacts →
	Indirect evidence “Life Technologies is now part of Thermo Fisher Scientific.” Source: RevenueBase Database · checked Sep 22, 2026
10	Revvity	Indirect evidence	Waltham, MA, United StatesHQ checked Sep 22, 2026	10001+	2,938 contacts →
	Indirect evidence “At Revvity, “impossible” is inspiration, and ""can't be done"" is a call to action.” Source: RevenueBase Database · checked Sep 22, 2026
11	Arup Laboratories	Partial evidence	Salt Lake City, UT, United StatesHQ checked Sep 22, 2026	1,001-5,000	2,768 contacts →
	Partial 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 22, 2026
12	Myriad Genetics	Partial evidence	Salt Lake City, UT, United StatesHQ checked Sep 22, 2026	1,001-5,000	2,718 contacts →
	Partial 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 22, 2026
13	Antech Diagnostics	Partial evidence	Fountain Valley, CA, United StatesHQ checked Sep 22, 2026	1,001-5,000	1,884 contacts →
	Partial evidence “Smarter Diagnostics.” Source: RevenueBase Database · checked Sep 22, 2026
14	Neogenomics Laboratories	Indirect evidence	Fort Myers, FL, United StatesHQ checked Sep 22, 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 22, 2026
15	Bioreference	Indirect evidence	Elmwood Park, NJ, United StatesHQ checked Sep 22, 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 22, 2026
16	Clinical Pathology Laboratories	Partial evidence	Austin, TX, United StatesHQ checked Sep 22, 2026	1,001-5,000	1,528 contacts →
	Partial evidence “Clinical Pathology Laboratories (CPL) is a medically-led company dating back to 1948.” Source: RevenueBase Database · checked Sep 22, 2026
17	Q Solutions	Partial evidence	Durham, NC, United StatesHQ checked Sep 22, 2026	1,001-5,000	1,291 contacts →
	Partial evidence “Q² Solutions is now IQVIA Laboratories.” Source: RevenueBase Database · checked Sep 22, 2026
18	Azenta Life Sciences	Indirect evidence	Burlington, MA, United StatesHQ checked Sep 22, 2026	1,001-5,000	1,236 contacts →
	Indirect evidence “Azenta (Nasdaq: AZTA) is a leading provider of life sciences solutions worldwide, enabling impactful breakthroughs and therapies to market faster.” Source: RevenueBase Database · checked Sep 22, 2026
19	Sonora Quest Laboratories Laboratory Sciences Of Arizona	Strong evidence	Phoenix, AZ, United StatesHQ checked Sep 22, 2026	1,001-5,000	1,222 contacts →
	Strong 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 22, 2026
20	Pathgroup	Indirect evidence	Brentwood, TN, United StatesHQ checked Sep 22, 2026	1,001-5,000	1,098 contacts →
	Indirect 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 22, 2026
21	Genedx	Indirect evidence	Stamford, CT, United StatesHQ checked Sep 22, 2026	1,001-5,000	1,048 contacts →
	Indirect evidence “We see a world where every genetic condition is understood, and every patient receives the care they need to live their healthiest life through genomics.” Source: RevenueBase Database · checked Sep 22, 2026
22	Ambry Genetics	Indirect evidence	Aliso Viejo, CA, United StatesHQ checked Sep 22, 2026	501-1,000	957 contacts →
	Indirect 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 22, 2026
23	Luminex	Indirect evidence	Austin, TX, United StatesHQ checked Sep 22, 2026	501-1,000	837 contacts →
	Indirect evidence “At Luminex, our mission is to empower labs to obtain reliable, timely, and actionable answers, ultimately advancing health.” Source: RevenueBase Database · checked Sep 22, 2026
24	Invitae	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 22, 2026	1,001-5,000	703 contacts →
	Indirect evidence “Invitae, now part of Labcorp, is a leading medical genetics company trusted by millions of patients and their providers to deliver timely genetic information using digital…” Source: RevenueBase Database · checked Sep 22, 2026
25	Aegis Sciences Corporation	Indirect evidence	Nashville, TN, United StatesHQ checked Sep 22, 2026	501-1,000	690 contacts →
	Indirect evidence “Founded in 1990, Aegis Sciences Corporation is a forensic toxicology and healthcare laboratory that provides science-driven drug testing and consulting services based in…” Source: RevenueBase Database · checked Sep 22, 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: specialty diagnostics 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 specialty diagnostics laboratories.
Partial evidence: Its own public description names part of specialty diagnostics laboratories, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name specialty diagnostics 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 1,726 specialty diagnostics laboratories based in the United States

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Specialty diagnostics laboratories based in the United States at a glance

As of Sep 22, 2026

30.0%Verified-email coverage

132.3Average contacts per company

11-50Median size (employees)

2.7%Largest-city concentration · Houston

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

522

11-50

609

51-200

379

201-500

113

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 1,726 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 specialty diagnostics 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 “specialty diagnostics 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 specialty diagnostics 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 specialty diagnostics 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, 68,576 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 22, 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.

Specialty diagnostics laboratories by metro

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 specialty diagnostics 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 specialty diagnostics laboratories are there based in the United States?

RevenueBase identified 1,726 specialty diagnostics 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?

Agilent Technologies, headquartered in Santa Clara, tops this list with the largest team on record.

Which city has the most specialty diagnostics laboratories?

Houston leads with 46 headquartered companies, followed by San Diego (34) and Irvine (31).

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 68,576 verified decision-maker contacts tracked across these 1,726 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 22, 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.