Company lists · Data refreshed September 2026

Top 25 Assay development service providers worldwide

Name: Assay development service providers worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 1,287 companies tracked

RevenueBase identified 1,287 assay development service providers worldwide as of September 2026 and tracks 43,894 professional contacts across them, including 18,396 with verified work emails. The United States is the largest market and San Diego the largest hub.

This list covers assay development service providers worldwide, 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. Country and city lists for assay development service providers follow the table.

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

1,287Companies

43,894Contacts tracked

18,396Verified emails

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The 25 largest assay development service providers worldwide

Ranked by team size

Top 25 of 1,287 assay development service providers worldwide, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to assay development service providers: 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	Illumina	Partial evidence	San Diego, CA, United StatesHQ checked Sep 19, 2026	5,001-10,000	8,987 contacts →
	Partial 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 19, 2026
2	Myriad Genetics	Indirect evidence	Salt Lake City, UT, United StatesHQ checked Sep 19, 2026	1,001-5,000	2,718 contacts →
	Indirect 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
3	Iqvia Laboratories	Partial evidence	United StatesHQ checked Sep 19, 2026	5,001-10,000	1,400 contacts →
	Partial evidence “As a leading global drug discovery and development laboratory services organization, IQVIA Laboratories provides a broad range of central laboratory and specialty biomarker…” Source: RevenueBase Database · checked Sep 19, 2026
4	Inotiv	Partial evidence	West Lafayette, IN, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,015 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 19, 2026
5	Meso Scale Diagnostics, LLC	Strong evidence	Rockville, MD, United StatesHQ checked Sep 19, 2026	1,001-5,000	954 contacts →
	Strong 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
6	Bioagilytix	Partial evidence	Durham, NC, United StatesHQ checked Sep 19, 2026	1,001-5,000	915 contacts →
	Partial 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
7	Cellcarta	Indirect evidence	Montreal, QC, CanadaHQ checked Sep 19, 2026	501-1,000	760 contacts →
	Indirect evidence “As a global leader in precision medicine testing services, we partner with our clients to address the most complex biomarker and bioanalytical challenges and deliver highly…” Source: RevenueBase Database · checked Sep 19, 2026
8	Solvias	Indirect evidence	Kaiseraugst, SwitzerlandHQ checked Sep 19, 2026	501-1,000	683 contacts →
	Indirect evidence “Solvias helps innovative companies advance their path to commercialization with CMC analytical solutions powered by deep scientific expertise and a relentless focus on our…” Source: RevenueBase Database · checked Sep 19, 2026
9	Raptakos Brett & CO	Partial evidence	IndiaHQ checked Sep 19, 2026	1,001-5,000	590 contacts →
	Partial evidence “RBCRS provides focused services for formulation development, analytical method development, Neutraceuticals and food supplements.” Source: RevenueBase Database · checked Sep 19, 2026
10	Quanterix	Indirect evidence	Billerica, MA, United StatesHQ checked Sep 19, 2026	201-500	455 contacts →
	Indirect evidence “Quanterix is a company that is digitizing biomarker analysis with the goal of advancing the science of precision health.” Source: RevenueBase Database · checked Sep 19, 2026
11	LGC Biosearch Technologies	Partial evidence	Hoddesdon, United KingdomHQ checked Sep 19, 2026	501-1,000	433 contacts →
	Partial evidence “Whether you’re developing molecular diagnostic tests, clinical genomics assays, novel oligo therapeutics or using genotyping to develop improved, sustainable crops - high-quality…” Source: RevenueBase Database · checked Sep 19, 2026
12	Jubilant Chemsys	Indirect evidence	Noida, IndiaHQ checked Sep 19, 2026	501-1,000	353 contacts →
	Indirect evidence “Jubilant Chemsys Ltd (JCL); a company registered under the Indian Companies Act, 1956 offers services in synthetic, organic and medicinal chemistry areas to various pharmaceutical…” Source: RevenueBase Database · checked Sep 19, 2026
13	Eurogentec	Indirect evidence	Seraing, BelgiumHQ checked Sep 19, 2026	201-500	349 contacts →
	Indirect evidence “Eurogentec, part of Kaneka Corporation, is an international biotechnology supplier, based in Belgium, who specializes in genomics and proteomics.” Source: RevenueBase Database · checked Sep 19, 2026
14	Kcas BIO	Indirect evidence	Olathe, KS, United StatesHQ checked Sep 19, 2026	201-500	347 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 19, 2026
15	Personalis, INC	Indirect evidence	Fremont, CA, United StatesHQ checked Sep 19, 2026	201-500	325 contacts →
	Indirect evidence “At Personalis, we are transforming the active management of cancer through breakthrough personalized testing.” Source: RevenueBase Database · checked Sep 19, 2026
16	Biospring Gmbh	Indirect evidence	Frankfurt Am Main, GermanyHQ checked Sep 19, 2026	501-1,000	312 contacts →
	Indirect evidence “BioSpring GmbH is one of the pioneers in the oligonucleotide CDMO industry, with a proven track record since 1997.” Source: RevenueBase Database · checked Sep 19, 2026
17	Labcorp Clinical Trials	Indirect evidence	United StatesHQ checked Sep 19, 2026	10001+	301 contacts →
	Indirect evidence “Laboratory Corporation of America® Holdings, an S&P 500 company, is the world’s leading health care diagnostics company, providing comprehensive clinical laboratory services…” Source: RevenueBase Database · checked Sep 19, 2026
18	Cayman Chemical	Partial evidence	Ann Arbor, MI, United StatesHQ checked Sep 19, 2026	201-500	287 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 19, 2026
19	Wuxi Apptec China	Indirect evidence	Shanghai, ChinaHQ checked Sep 19, 2026	10001+	285 contacts →
	Indirect evidence “Established in December WuXi AppTec (NYSE: WX) is a leading global pharmaceutical, biopharmaceutical, and medical device open-access capability and technology platform with…” Source: RevenueBase Database · checked Sep 19, 2026
20	Resolian	Partial evidence	Malvern, United StatesHQ checked Sep 19, 2026	501-1,000	281 contacts →
	Partial evidence “Resolian is a specialist bioanalytical, biomarker and analytical sciences CRO supporting drug development with labs in USA, UK, Australia and China.” Source: RevenueBase Database · checked Sep 19, 2026
21	Biotrial	Partial evidence	Europe And North America, FranceHQ checked Sep 19, 2026	201-500	271 contacts →
	Partial evidence “A Global Provider in Early Development, we offer Non-Clinical, Clinical and Bioanalytical solutions for both pharmaceutical and biotech companies and we tailor our high-quality…” Source: RevenueBase Database · checked Sep 19, 2026
22	Paraza Pharma INC	Indirect evidence	Montreal, QC, CanadaHQ checked Sep 19, 2026	201-500	266 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
23	Watchmaker Genomics	Indirect evidence	Boulder, CO, United StatesHQ checked Sep 19, 2026	51-200	228 contacts →
	Indirect evidence “Watchmaker Genomics is a biotechnology company that specializes in advanced enzymology to develop precision tools for life sciences.” Source: RevenueBase Database · checked Sep 19, 2026
24	Yashraj Biotechnology LTD	Indirect evidence	Navi Mumbai, IndiaHQ checked Sep 19, 2026	201-500	228 contacts →
	Indirect evidence “Yashraj Biotechnology Ltd, founded in and based in Navi Mumbai, is an ISO 13485:2016 and ISO 9001:2015 certified manufacturer supplying high‑purity native and recombinant antigens…” Source: RevenueBase Database · checked Sep 19, 2026
25	Chrysos Corporation	Indirect evidence	Tonsley, AustraliaHQ checked Sep 19, 2026	51-200	196 contacts →
	Indirect evidence “Chrysos Corporation combines science and software to create technology solutions for the global mining industry.” 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: assay development service providers. 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 assay development service providers.
Partial evidence: Its own public description names part of assay development service providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name assay development service providers. 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 1,287 assay development service providers worldwide

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Assay development service providers worldwide at a glance

As of Sep 19, 2026

41.9%Verified-email coverage

34.1Average contacts per company

11-50Median size (employees)

2.3%Largest-city concentration · San Diego

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

555

11-50

446

51-200

174

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 assay development service providers, 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.
Coverage: Every country. Country and city lists for assay development service providers are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “assay development service providers”. 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 assay development service providers), 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 assay development service providers, and records with no verified work email.
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, 18,396 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.

Assay development service providers by location

7 lists · largest first

Every Assay development service providers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 assay development service providers, 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 assay development service providers are there worldwide?

RevenueBase identified 1,287 assay development service providers worldwide 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?

Illumina, headquartered in San Diego, tops this list with the largest team on record.

Which country has the most assay development service providers?

The United States leads with 463 companies, followed by India (82) and the United Kingdom (76). Every assay development service providers list by country and city is linked on this page.

Which city has the most assay development service providers?

San Diego leads with 30 headquartered companies, followed by Cambridge (14) and Tehran (14).

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 18,396 verified decision-maker contacts tracked across these 1,287 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.