Company lists · Data refreshed September 2026

Top 25 Biomarker testing laboratories based in the United States

Name: Biomarker 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 19, 2026 1,599 companies tracked

RevenueBase identified 1,599 biomarker testing laboratories headquartered in the United States as of September 2026 and tracks 234,252 professional contacts across them, including 93,482 with verified work emails. San Diego is the largest hub.

This list covers biomarker testing 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 19, 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 19, 2026 86% judged on-target in blind review

1,599Companies

234,252Contacts tracked

93,482Verified emails

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The 25 largest biomarker testing laboratories based in the United States

Ranked by team size

Top 25 of 1,599 biomarker testing laboratories based in the United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to biomarker testing 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	Thermo Fisher Scientific	Indirect evidence	Waltham, MA, United StatesHQ checked Sep 19, 2026	10001+	70,907 contacts →
	Indirect evidence “About Thermo Fisher Scientific Thermo Fisher Scientific Inc.” Source: RevenueBase Database · checked Sep 19, 2026
2	Labcorp	Indirect evidence	Burlington, NC, United StatesHQ checked Sep 19, 2026	10001+	38,427 contacts →
	Indirect evidence “Clear and confident health care decisions begin with questions.” Source: RevenueBase Database · checked Sep 19, 2026
3	Quest Diagnostics	Indirect evidence	Secaucus, NJ, United StatesHQ checked Sep 19, 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 19, 2026
4	Beckman Coulter Diagnostics	Indirect evidence	Brea, CA, United StatesHQ checked Sep 19, 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 19, 2026
5	Waters Corporation	Indirect evidence	Milford, MA, United StatesHQ checked Sep 19, 2026	10001+	8,189 contacts →
	Indirect 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 19, 2026
6	Natera	Indirect evidence	Austin, TX, United StatesHQ checked Sep 19, 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 19, 2026
7	Guardant Health	Indirect evidence	Palo Alto, CA, United StatesHQ checked Sep 19, 2026	1,001-5,000	3,321 contacts →
	Indirect evidence “Guardant Health is a leading precision medicine company focused on guarding wellness and giving every person more time free from cancer.” Source: RevenueBase Database · checked Sep 19, 2026
8	Revvity	Indirect evidence	Waltham, MA, United StatesHQ checked Sep 19, 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 19, 2026
9	Arup Laboratories	Partial evidence	Salt Lake City, UT, United StatesHQ checked Sep 19, 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 19, 2026
10	Myriad Genetics	Partial evidence	Salt Lake City, UT, United StatesHQ checked Sep 19, 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 19, 2026
11	Neogenomics Laboratories	Indirect evidence	Fort Myers, FL, United StatesHQ checked Sep 19, 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 19, 2026
12	Eurofins Lancaster Laboratories	Partial evidence	Lancaster, PA, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,638 contacts →
	Partial evidence “Eurofins Lancaster Laboratories is one of the largest commercial contract laboratories in the world providing comprehensive laboratory services in the pharmaceutical…” Source: RevenueBase Database · checked Sep 19, 2026
13	Bioreference	Partial evidence	Elmwood Park, NJ, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,610 contacts →
	Partial 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 19, 2026
14	Caris Life Sciences	Indirect evidence	Irving, TX, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,556 contacts →
	Indirect evidence “Caris Life Sciences® (Caris) is the leading next-generation TechBio company and precision medicine pioneer that is actively developing and delivering innovative solutions to…” Source: RevenueBase Database · checked Sep 19, 2026
15	Clinical Pathology Laboratories	Partial evidence	Austin, TX, United StatesHQ checked Sep 19, 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 19, 2026
16	Q Solutions	Partial evidence	Durham, NC, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,291 contacts →
	Partial evidence “Q² Solutions is now IQVIA Laboratories.” Source: RevenueBase Database · checked Sep 19, 2026
17	Sonora Quest Laboratories Laboratory Sciences Of Arizona	Partial evidence	Phoenix, AZ, United StatesHQ checked Sep 19, 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 19, 2026
18	Genscript	Indirect evidence	Piscataway, NJ, United StatesHQ checked Sep 19, 2026	5,001-10,000	1,194 contacts →
	Indirect evidence “GenScript Life Science Group is a part of GenScript Biotech Corporation.” Source: RevenueBase Database · checked Sep 19, 2026
19	Ambry Genetics	Indirect evidence	Aliso Viejo, CA, United StatesHQ checked Sep 19, 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 19, 2026
20	Meso Scale Diagnostics, LLC	Indirect evidence	Rockville, MD, United StatesHQ checked Sep 19, 2026	1,001-5,000	954 contacts →
	Indirect evidence “Founded in 1995, Meso Scale Discovery (MSD) is a global leader in the development, manufacture, and commercialization of innovative assays and instruments for the measurement of…” Source: RevenueBase Database · checked Sep 19, 2026
21	Bioagilytix	Indirect evidence	Durham, NC, United StatesHQ checked Sep 19, 2026	1,001-5,000	915 contacts →
	Indirect evidence “BioAgilytix is a leading global contract research organization focused on supporting pharmaceutical and biotech partners in all phases of drug development.” Source: RevenueBase Database · checked Sep 19, 2026
22	Luminex	Indirect evidence	Austin, TX, United StatesHQ checked Sep 19, 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 19, 2026
23	Aegis Sciences Corporation	Partial evidence	Nashville, TN, United StatesHQ checked Sep 19, 2026	501-1,000	690 contacts →
	Partial 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 19, 2026
24	Castle Biosciences, INC	Indirect evidence	Friendswood, TX, United StatesHQ checked Sep 19, 2026	501-1,000	682 contacts →
	Indirect evidence “Castle Biosciences (Nasdaq: CSTL) is a leading diagnostics company improving health through innovative tests that guide patient care.” Source: RevenueBase Database · checked Sep 19, 2026
25	Veracyte, INC	Indirect evidence	South San Francisco, CA, United StatesHQ checked Sep 19, 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 19, 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: biomarker testing 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 biomarker testing laboratories.
Partial evidence: Its own public description names part of biomarker testing laboratories, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name biomarker testing 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 1,599 biomarker testing laboratories based in the United States

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Biomarker testing laboratories based in the United States at a glance

As of Sep 19, 2026

39.9%Verified-email coverage

146.5Average contacts per company

11-50Median size (employees)

2.9%Largest-city concentration · San Diego

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

483

11-50

606

51-200

321

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 1,599 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 biomarker testing 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 “biomarker testing 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 biomarker testing 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 biomarker testing 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, 93,482 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 19, 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.

Biomarker testing 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 biomarker testing 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 biomarker testing laboratories are there based in the United States?

RevenueBase identified 1,599 biomarker testing 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?

Thermo Fisher Scientific, headquartered in Waltham, tops this list with the largest team on record.

Which city has the most biomarker testing laboratories?

San Diego leads with 46 headquartered companies, followed by Irvine (41) and Houston (34).

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 93,482 verified decision-maker contacts tracked across these 1,599 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 19, 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.