Company lists · Data refreshed November 2026

Top 24 Contract research laboratories based in the United States

RevenueBase identified 1,799 company matches for contract research laboratories associated with the United States as of November 2026 and tracks 278,689 professional contacts across them, including 122,622 with verified work emails. San Diego is the largest hub.

This list covers company matches for contract research 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 November 6, 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 Nov 6, 2026 How this list was built
1,799Companies
278,689Contacts tracked
122,622Verified emails
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The 24 largest contract research laboratories based in the United States

Ranked by team size
Top 24 of 1,799 company matches for contract research laboratories based in the United States, 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 matchWaltham, MA, United StatesHQ recorded Nov 6, 202610001+75,914 contacts →

Exact match

“About Thermo Fisher Scientific Thermo Fisher Scientific Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchBurlington, NC, United StatesHQ recorded Nov 6, 202610001+40,243 contacts →

Exact match

“Clear and confident health care decisions begin with questions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchWilmington, NC, United StatesHQ recorded Nov 6, 202610001+19,955 contacts →

Exact match

“PPD is part of Thermo Fisher Scientific, the world leader in serving science.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchResearch Triangle Park, NC, United StatesHQ recorded Nov 6, 202610001+11,174 contacts →

Exact match

“Fortrea (Nasdaq: FTRE) is a leading global clinical research organization (CRO) dedicated to providing innovative clinical development solutions to the life sciences industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchCincinnati, OH, United StatesHQ recorded Nov 6, 20265,001-10,0006,387 contacts →

Exact match

“Medpace is a scientifically-driven, global, full-service clinical contract research organization (CRO) providing Phase I-IV clinical development services to the biotechnology…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchResearch Triangle Park, NC, United StatesHQ recorded Nov 6, 20261,001-5,0003,853 contacts →

Exact match

“Worldwide Clinical Trials (Worldwide) is a global CRO serving development-driven biopharmaceutical companies, with more than 4,400 professionals operating across more than 70…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchChicago, IL, United StatesHQ recorded Nov 6, 20265,001-10,0003,308 contacts →

Exact match

“EVERSANA® is a leading independent provider of global services to the life sciences industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchMorrisville, NC, United StatesHQ recorded Nov 6, 20261,001-5,0002,732 contacts →

Exact match

“Premier Research International LLC (Premier) is a global leader in clinical research and consulting services with expertise in driving an efficient and effective path to market…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchMinneapolis, NC, United StatesHQ recorded Nov 6, 20261,001-5,0002,334 contacts →

Exact match

“Pace® Science and Technology Company makes the world a safer, healthier place.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchRaleigh, NC, United StatesHQ recorded Nov 6, 20261,001-5,0002,198 contacts →

Exact match

“At ProPharma, we help pharmaceutical, biotechnology, and medical device companies bring life-changing therapies to market.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchBethesda, MD, United StatesHQ recorded Nov 6, 20261,001-5,0001,947 contacts →

Exact match

“Precision for Medicine is an industry-leading global clinical research services organization, purpose-built to improve the clinical research and development process for new…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchDurham, NC, United StatesHQ recorded Nov 6, 20261,001-5,0001,725 contacts →

Exact match

“KBI Biopharma is an award-winning biopharmaceutical contract services organization providing fully-integrated, accelerated drug development and biomanufacturing services to…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchLancaster, PA, United StatesHQ recorded Nov 6, 20261,001-5,0001,676 contacts →

Exact match

“Eurofins Lancaster Laboratories is one of the largest commercial contract laboratories in the world providing comprehensive laboratory services in the pharmaceutical…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchHorsham, PA, United StatesHQ recorded Nov 6, 20261,001-5,0001,620 contacts →

Exact match

“ClinChoice is a leading global full & functional service CRO, renowned for its exceptional product development and lifecycle management capabilities across the pharmaceutical…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchLenexa, KS, United StatesHQ recorded Nov 6, 20261,001-5,0001,415 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 · Nov 6, 2026 · View company records in RevenueBase
16Exact matchPiscataway, NJ, United StatesHQ recorded Nov 6, 20265,001-10,0001,305 contacts →

Exact match

“GenScript Life Science Group is a part of GenScript Biotech Corporation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchBurlington, MA, United StatesHQ recorded Nov 6, 20261,001-5,0001,261 contacts →

Exact match

“Azenta (Nasdaq: AZTA) is a leading provider of life sciences solutions worldwide, enabling impactful breakthroughs and therapies to market faster.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchDurham, NC, United StatesHQ recorded Nov 6, 20261,001-5,0001,202 contacts →

Exact match

“Q² Solutions is now IQVIA Laboratories.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchWest Lafayette, IN, United StatesHQ recorded Nov 6, 20261,001-5,0001,084 contacts →

Exact match

“WHERE INSIGHTS LEAD TO ANSWERS Expect More In choosing a partner for discovery, development and research models, expect more: more attention, more insight, and a superlative…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchWilmington, NC, United StatesHQ recorded Nov 6, 2026501-1,0001,069 contacts →

Exact match

“Alcami is a US-based contract development and manufacturing organization headquartered in NC with 45+ years of experience advancing pharmaceuticals and biologics from development…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchRockville, MD, United StatesHQ recorded Nov 6, 20261,001-5,000974 contacts →

Exact match

“Emmes is a Contract Research Organization delivering complex clinical trials through therapeutic expertise, scientific rigor, and technology-enabled execution.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchCanton, MI, United StatesHQ recorded Nov 6, 2026501-1,000959 contacts →

Exact match

“MMS Holdings (MMS) is an award-winning, data-focused clinical research organization (CRO) that supports the pharmaceutical and biotech industries with a proven, scientific…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchDurham, NC, United StatesHQ recorded Nov 6, 20261,001-5,000945 contacts →

Exact match

“BioAgilytix is a leading global contract research organization focused on supporting pharmaceutical and biotech partners in all phases of drug development.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchIselin, NJ, United StatesHQ recorded Nov 6, 2026501-1,000943 contacts →

Exact match

“Discover how Excelra, a leader in biopharma data and analytics, uniquely blends scientific understanding with technological expertise.”

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

Showing 24 of 1,799 contract research laboratories based in the United States

See the full list, filter by size, metro and specialty, and access 122,622 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Contract research laboratories based in the United States at a glance

As of Nov 6, 2026
44.0%Verified-email coverage
154.9Average contacts per company
11-50Median size (employees)
3.2%Largest-city concentration · San Diego
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
675
11-50
628
51-200
287
201-500
72
501-1,000
50
1,001-5,000
47
5,001-10,000
12
10001+
24

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 1,799 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 “contract research 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 122,622 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.

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

How many contract research laboratories are there based in the United States?

RevenueBase identified 1,799 company matches for contract research laboratories associated with the United States 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?

Thermo Fisher Scientific tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most contract research laboratories?

San Diego leads with 58 company records, followed by Houston (33) and Miami (32).

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 122,622 professional contacts with verified work emails tracked across these 1,799 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.