Company lists · Data refreshed September 2026

Top 25 Assay development service providers based in the United States

RevenueBase identified 463 company matches for assay development service providers associated with the United States as of September 2026 and tracks 25,915 professional contacts across them, including 11,960 with verified work emails. San Diego is the largest hub.

This list covers company matches for assay development service providers 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 September 19, 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 Sep 19, 2026 How this list was built
463Companies
25,915Contacts tracked
11,960Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest assay development service providers based in the United States

Ranked by team size
Top 25 of 463 company matches for assay development service providers based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 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 matchSan Diego, CA, United StatesHQ recorded Sep 19, 20265,001-10,0008,987 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2Exact matchSalt Lake City, UT, United StatesHQ recorded Sep 19, 20261,001-5,0002,718 contacts →

Exact match

“Myriad Genetics is a leading molecular diagnostic testing and precision medicine company dedicated to advancing health and well-being for all.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3Exact matchWest Lafayette, IN, United StatesHQ recorded Sep 19, 20261,001-5,0001,015 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 · Sep 19, 2026 · View company records in RevenueBase
4Exact matchRockville, MD, United StatesHQ recorded Sep 19, 20261,001-5,000954 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5Exact matchDurham, NC, United StatesHQ recorded Sep 19, 20261,001-5,000915 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 · Sep 19, 2026 · View company records in RevenueBase
6Exact matchBillerica, MA, United StatesHQ recorded Sep 19, 2026201-500455 contacts →

Exact match

“Quanterix is a company that is digitizing biomarker analysis with the goal of advancing the science of precision health.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7Exact matchOlathe, KS, United StatesHQ recorded Sep 19, 2026201-500347 contacts →

Exact match

“KCAS Bio is a top-tier contract research organization (CRO) that has 45 years of experience with both large pharma and biotech sponsors, providing comprehensive bioanalytical drug…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8Exact matchFremont, CA, United StatesHQ recorded Sep 19, 2026201-500325 contacts →

Exact match

“At Personalis, we are transforming the active management of cancer through breakthrough personalized testing.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9Exact matchAnn Arbor, MI, United StatesHQ recorded Sep 19, 2026201-500287 contacts →

Exact match

“Helping Make Research Possible We are helping make research possible by supplying scientists worldwide with the assay kits, antibodies, proteins, and biochemicals to advance their…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10Exact matchBoulder, CO, United StatesHQ recorded Sep 19, 202651-200228 contacts →

Exact match

“Watchmaker Genomics is a biotechnology company that specializes in advanced enzymology to develop precision tools for life sciences.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11Exact matchHackensack, NJ, United StatesHQ recorded Sep 19, 2026201-500194 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12Exact matchWaltham, MA, United StatesHQ recorded Sep 19, 20261,001-5,000188 contacts →

Exact match

“Biocytogen provides integrated solutions for next-generation antibody drug development to the global biomedical communities.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13Exact matchSan Diego, CA, United StatesHQ recorded Sep 19, 2026201-500182 contacts →

Exact match

“Invivoscribe® is a global leader dedicated to Improving Lives with Precision Diagnostics®, advancing the quality of healthcare by providing innovative products and clinical…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14Exact matchTinley Park, IL, United StatesHQ recorded Sep 19, 2026201-500179 contacts →

Exact match

“Hematogenix, a global cancer-focused life science company serving the pharmaceutical & biotechnology industry as well as community physicians.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15Exact matchFarmingdale, NY, United StatesHQ recorded Sep 19, 202651-200166 contacts →

Exact match

“For more than 45 years, Enzo Biochem has been a leader in innovation and product development to support a diverse range of needs in biomedical research and healthcare.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16Exact matchSan Carlos, WA, United StatesHQ recorded Sep 19, 202651-200155 contacts →

Exact match

“Born from the founders’ recognition that their diverse but complementary skills and experiences would enable them to successfully address challenges that others had not, Nautilus…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17Exact matchNewark, CA, United StatesHQ recorded Sep 19, 2026201-500140 contacts →

Exact match

“Vector Laboratories serves and partners with scientists and industry teams developing the next generation of diagnostics, therapeutics, and biological insights.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18Exact matchColorado Springs, CO, United StatesHQ recorded Sep 19, 202651-200136 contacts →

Exact match

“Aliri is committed to solving industry challenges by bringing innovative bioanalysis and spatial solutions to biotech and pharma, as the complexity of the drug development…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19Exact matchAustin, TX, United StatesHQ recorded Sep 19, 202651-200131 contacts →

Exact match

“Rules-Based Medicine (RBM), an IQVIA business, provides specialty immunoassay testing.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20Exact matchTampa, FL, United StatesHQ recorded Sep 19, 202651-200128 contacts →

Exact match

“Immunologix Laboratories is a unique scientific partner, offering GLP and GCP compliant laboratory capabilities focused on ligand binding-based bioanalysis coupled with expert…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21Exact matchNewark, CA, United StatesHQ recorded Sep 19, 202651-200122 contacts →

Exact match

“ATUM is an industry-leading provider of life science tools and solutions.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
22Exact matchRockville, MD, United StatesHQ recorded Sep 19, 2026201-500119 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23Exact matchFremont, CA, United StatesHQ recorded Sep 19, 202651-200116 contacts →

Exact match

“Eurofins DiscoverX, the products company of Eurofins Discovery, is committed to enabling and accelerating multi-modality drug discovery and development from discovery to QC lot…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24Exact matchSan Diego, CA, United StatesHQ recorded Sep 19, 202651-200115 contacts →

Exact match

“BPS Bioscience advances new scientific discoveries that lead to therapies by creating innovative solutions for research.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25Exact matchBoston, MA, United StatesHQ recorded Sep 19, 2026201-500112 contacts →

Exact match

“Fortis Life Sciences® partners with diagnostics and life sciences companies to design, validate, and manufacture solutions to solve their complex development problems.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase

Showing 25 of 463 assay development service providers based in the United States

See the full list, filter by size, metro and specialty, and access 11,960 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Assay development service providers based in the United States at a glance

As of Sep 19, 2026
46.2%Verified-email coverage
56.0Average contacts per company
11-50Median size (employees)
6.5%Largest-city concentration · San Diego
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
212
11-50
150
51-200
60
201-500
23
501-1,000
7
1,001-5,000
8
5,001-10,000
1
10001+
2

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 463 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 “assay development service providers” 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 11,960 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 September 19, 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 “assay development service providers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many assay development service providers are there based in the United States?

RevenueBase identified 463 company matches for assay development service providers associated with the United States as of September 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?

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

Which city has the most assay development service providers?

San Diego leads with 30 company records, followed by Houston (9) and Boston (8).

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 11,960 professional contacts with verified work emails tracked across these 463 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 September 19, 2026.

Ready to reach these companies? Verified emails and direct dials for all 463 assay development service providers based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

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.