Company lists · Data refreshed September 2026

Top 25 Chemical testing laboratories based in the United States

Name: Chemical 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 16, 2026 942 companies tracked

RevenueBase identified 942 chemical testing laboratories headquartered in the United States as of September 2026 and tracks 22,568 professional contacts across them, including 8,571 with verified work emails. Houston is the largest hub.

This list covers chemical 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 16, 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 16, 2026 86% judged on-target in blind review

942Companies

22,568Contacts tracked

8,571Verified emails

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The 25 largest chemical testing laboratories based in the United States

Ranked by team size

Top 25 of 942 chemical testing laboratories based in the United States, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to chemical 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	Pace Analytical Services	Indirect evidence	Minneapolis, MN, United StatesHQ checked Sep 16, 2026	1,001-5,000	2,228 contacts →
	Indirect evidence “Pace® Science and Technology Company makes the world a safer, healthier place.” Source: RevenueBase Database · checked Sep 16, 2026
2	Eurofins Lancaster Laboratories	Partial evidence	Lancaster, PA, United StatesHQ checked Sep 16, 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 16, 2026
3	Nelson Labs	Partial evidence	Salt Lake City, UT, United StatesHQ checked Sep 16, 2026	501-1,000	775 contacts →
	Partial evidence “Nelson Labs is a global leader in microbiological and analytical chemistry testing and advisory services for the medical device and pharmaceutical industries.” Source: RevenueBase Database · checked Sep 16, 2026
4	Emsl Analytical, INC	Strong evidence	Cinnaminson, NJ, United StatesHQ checked Sep 16, 2026	501-1,000	719 contacts →
	Strong evidence “As the nation's leading environmental testing firm, EMSL's network of nationwide laboratories has been providing quality analytical services since 1981.” Source: RevenueBase Database · checked Sep 16, 2026
5	Aegis Sciences Corporation	Partial evidence	Nashville, TN, United StatesHQ checked Sep 16, 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 16, 2026
6	Microbac Laboratories, INC	Indirect evidence	Pittsburgh, PA, United StatesHQ checked Sep 16, 2026	501-1,000	494 contacts →
	Indirect evidence “Companies of all sizes partner with Microbac to test the quality, safety, and performance of their products and operations.” Source: RevenueBase Database · checked Sep 16, 2026
7	Food Safety NET Services	Partial evidence	San Antonio, TX, United StatesHQ checked Sep 16, 2026	501-1,000	451 contacts →
	Partial evidence “As part of Certified Group, Food Safety Net Services (FSNS) and Certified Laboratories partner with customers to deliver innovative scientific solutions and expertise – So The…” Source: RevenueBase Database · checked Sep 16, 2026
8	ACM Global Laboratories	Strong evidence	Rochester, NY, United StatesHQ checked Sep 16, 2026	1,001-5,000	446 contacts →
	Strong 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 16, 2026
9	NMS Labs	Partial evidence	Horsham, PA, United StatesHQ checked Sep 16, 2026	201-500	411 contacts →
	Partial evidence “NMS Labs has been setting the standard for excellence in clinical toxicology and forensic testing-responding to the needs of healthcare providers, medical researchers, coroners…” Source: RevenueBase Database · checked Sep 16, 2026
10	Enthalpy Analytical	Partial evidence	North Little Rock, AR, United StatesHQ checked Sep 16, 2026	501-1,000	349 contacts →
	Partial evidence “Our laboratory service experts provide clients with precision testing support, innovative scientific approaches, and high-quality data that delivers a sense of certainty.” Source: RevenueBase Database · checked Sep 16, 2026
11	Atl, A Bureau Veritas Company	Indirect evidence	Milford, OH, United StatesHQ checked Sep 16, 2026	501-1,000	314 contacts →
	Indirect evidence “Founded in 1987, ATL, A Bureau Veritas Company, is a Scientific Sourcing Solutions Company.” Source: RevenueBase Database · checked Sep 16, 2026
12	Dominion Diagnostics	Partial evidence	North Kingstown, RI, United StatesHQ checked Sep 16, 2026	201-500	304 contacts →
	Partial evidence “For over 25 years, Dominion Diagnostics has been advancing patient care through trusted diagnostics as a premier urine drug testing and toxicology laboratory.” Source: RevenueBase Database · checked Sep 16, 2026
13	Certified Laboratories, INC	Partial evidence	Melville, NY, United StatesHQ checked Sep 16, 2026	1,001-5,000	287 contacts →
	Partial evidence “As part of Certified Group, Certified Laboratories partners with customers to deliver innovative scientific solutions and expertise – So The World Can Trust In What It Consumes™.” Source: RevenueBase Database · checked Sep 16, 2026
14	ARL BIO Pharma	Partial evidence	Oklahoma City, OK, United StatesHQ checked Sep 16, 2026	201-500	286 contacts →
	Partial evidence “ARL Bio Pharma is a contract laboratory that provides analytical and microbiological testing for the pharmaceutical industry.” Source: RevenueBase Database · checked Sep 16, 2026
15	Alpha Analytical	Indirect evidence	Westborough, MA, United StatesHQ checked Sep 16, 2026	501-1,000	254 contacts →
	Indirect evidence “Since 1987, Alpha Analytical, Inc.” Source: RevenueBase Database · checked Sep 16, 2026
16	Deibel Laboratories	Partial evidence	Niles, IL, United StatesHQ checked Sep 16, 2026	201-500	242 contacts →
	Partial evidence “Deibel Laboratories started in 1967 by Dr.” Source: RevenueBase Database · checked Sep 16, 2026
17	Precision Diagnostics	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	501-1,000	235 contacts →
	Indirect evidence “Precision Diagnostics is the only U.S.” Source: RevenueBase Database · checked Sep 16, 2026
18	Medtox Laboratories	Strong evidence	New Brighton, MN, United StatesHQ checked Sep 16, 2026	501-1,000	215 contacts →
	Strong evidence “MEDTOX Laboratories contains a full-service clinical laboratory as well as a SAMHSA-certified drug testing laboratory.” Source: RevenueBase Database · checked Sep 16, 2026
19	RJ LEE Group	Partial evidence	Pittsburgh, PA, United StatesHQ checked Sep 16, 2026	201-500	194 contacts →
	Partial evidence “RJ Lee Group provides comprehensive laboratory testing and scientific consulting services.” Source: RevenueBase Database · checked Sep 16, 2026
20	GEL Laboratories, LLC	Strong evidence	Charleston, SC, United StatesHQ checked Sep 16, 2026	201-500	190 contacts →
	Strong evidence “Since 1981, GEL Laboratories has been a leading provider of comprehensive and reliable analytical services to the environmental industry including chemical, radiochemical…” Source: RevenueBase Database · checked Sep 16, 2026
21	Midwest Laboratories	Indirect evidence	Omaha, NE, United StatesHQ checked Sep 16, 2026	51-200	182 contacts →
	Indirect evidence “Driving smart decisions has been our passion since 1975, and we continue to do this by recruiting talented individuals in the fields of Chemistry, Biochemistry, Biology…” Source: RevenueBase Database · checked Sep 16, 2026
22	Quality Chemical Laboratories	Indirect evidence	Wilmington, NC, United StatesHQ checked Sep 16, 2026	201-500	177 contacts →
	Indirect evidence “QCL is science driven, quality focused, and responsive.” Source: RevenueBase Database · checked Sep 16, 2026
23	Q Laboratories	Partial evidence	Cincinnati, OH, United StatesHQ checked Sep 16, 2026	51-200	162 contacts →
	Partial evidence “Q Laboratories is an FDA/MoCRA registered (#1527260), cGMP/GLP compliant, and ISO/IEC 17025 accredited contract laboratory supporting global brands in delivering safe…” Source: RevenueBase Database · checked Sep 16, 2026
24	Advanced Environmental Laboratories, INC	Partial evidence	Jacksonville, FL, United StatesHQ checked Sep 16, 2026	51-200	158 contacts →
	Partial evidence “Advanced Environmental Laboratories, Inc.(AEL) is a NELAP/TNI and DOD certified, national full-service laboratory firm, headquartered in Jacksonville, Florida, with additional…” Source: RevenueBase Database · checked Sep 16, 2026
25	Phamatech, INC	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	51-200	147 contacts →
	Indirect evidence “Phamatech was founded in 1991 by a small group of dedicated scientists and business executives.” Source: RevenueBase Database · checked Sep 16, 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: chemical 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 chemical testing laboratories.
Partial evidence: Its own public description names part of chemical testing laboratories, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name chemical 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 942 chemical testing laboratories based in the United States

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Chemical testing laboratories based in the United States at a glance

As of Sep 16, 2026

38.0%Verified-email coverage

24.0Average contacts per company

11-50Median size (employees)

1.9%Largest-city concentration · Houston

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

361

11-50

394

51-200

141

201-500

501-1,000

1,001-5,000

5,001-10,000

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 942 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 chemical 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 “chemical 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 chemical 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 chemical 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, 8,571 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 16, 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.

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 chemical 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 chemical testing laboratories are there based in the United States?

RevenueBase identified 942 chemical 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?

Pace Analytical Services, headquartered in Minneapolis, tops this list with the largest team on record.

Which city has the most chemical testing laboratories?

Houston leads with 18 headquartered companies, followed by San Diego (12) and Denver (10).

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 8,571 verified decision-maker contacts tracked across these 942 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 16, 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.