Company lists · Data refreshed September 2026

Top 17 Test centers based in the United States

RevenueBase identified 34 company matches for test centers associated with the United States as of September 2026 and tracks 2,522 professional contacts across them, including 342 with verified work emails. Phoenix is the largest hub.

This list covers company matches for test centers 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 22, 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 22, 2026 How this list was built
34Companies
2,522Contacts tracked
342Verified emails
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The 17 largest test centers based in the United States

Ranked by team size
Top 17 of 34 company matches for test centers based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 22, 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 matchOlathe, KS, United StatesHQ recorded Sep 22, 20261,001-5,0001,022 contacts →

Exact match

“PSI has over 70 years of experience providing worldwide testing solutions to corporations, federal and state government agencies, professional associations, certifying bodies and…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
2Exact matchMclean, VA, United StatesHQ recorded Sep 22, 20261,001-5,000398 contacts →

Exact match

“Meazure Learning provides secure, reliable, and convenient test development, administration, and delivery solutions for academic and professional credentialing programs.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
3Exact matchLinden, NJ, United StatesHQ recorded Sep 22, 2026501-1,000342 contacts →

Exact match

“Accu Reference Medical Lab is a state-of-the-art medical testing laboratory service that provides a complete range of tests for diagnosis, screening or evaluation of diseases and…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
4Exact matchPhoenix, AZ, United StatesHQ recorded Sep 22, 2026201-500229 contacts →

Exact match

“At Kryterion, we know a thing or two about test delivery.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
5Exact matchRockville, MD, United StatesHQ recorded Sep 22, 20265,001-10,000203 contacts →

Exact match

“uExamS is the leading global provider of test & training support solutions.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
6Exact matchMidvale, UT, United StatesHQ recorded Sep 22, 202651-20050 contacts →

Exact match

“For media inquiries, please email press@caveon.com As pioneers in Exam Security for more than 20 years, Caveon offers innovative solutions to prevent, detect, and respond to exam…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
7Exact matchCommerce, CA, United StatesHQ recorded Sep 22, 202651-20045 contacts →

Exact match

“Since 1970, Michelson Laboratories has provided efficient testing and analyses to an extensive spectrum of customers.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
8Exact matchHeber City, UT, United StatesHQ recorded Sep 22, 20261-1014 contacts →

Exact match

“CMS is a full-service testing services company, including online test administration, test design and development, psychometric reviews and evaluations, the AUTHORWise item…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
9Exact matchNashville, TN, United StatesHQ recorded Sep 22, 202611-5014 contacts →

Exact match

“Professional Credential Services, Inc.(PCS) is a specialized service provider for examination development, examination administration, licensing and certification services to…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
10Exact matchBuffalo, NY, United StatesHQ recorded Sep 22, 202611-5011 contacts →

Exact match

“Occustar is a leading on-site examination services provider that’s been helping businesses and organizations’ control costs, streamline their process, and solidify recordkeeping…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
11Exact matchFranklin, TN, United StatesHQ recorded Sep 22, 20261-1010 contacts →

Exact match

“For over two decades, RegisterBlast has served as the extra pair of hands busy campus staff needed.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
12Exact matchPortland, OR, United StatesHQ recorded Sep 22, 20261-104 contacts →

Exact match

“At Smart Labs Now, we work with both employers and individuals to help keep people healthy and safe at work, home, and school.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
13Exact matchBossier City, LA, United StatesHQ recorded Sep 22, 20261-103 contacts →

Exact match

“Audiometrics, Inc.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
14Exact matchColorado Springs, CO, United StatesHQ recorded Sep 22, 20261-102 contacts →

Exact match

“Colorado Springs #1 Public Testing Center.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
15Exact matchSan Jose, CA, United StatesHQ recorded Sep 22, 20261-102 contacts →

Exact match

“ARCpoint Labs of Downtown San Jose is a trusted industry leader serving our greater Santa Clara county communities with drug, alcohol, DNA, and clinical testing solutions.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
16Exact matchGreensboro, NC, United StatesHQ recorded Sep 22, 202611-501 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
17Exact matchWashington, DC, United StatesHQ recorded Sep 22, 20261-101 contacts →

Exact match

“At Madison Assessment LLC, our mission is to provide our client institutions with the highest quality computer-based assessment tests available.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase

Showing 17 of 34 test centers based in the United States

See the full list, filter by size, metro and specialty, and access 342 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Test centers based in the United States at a glance

As of Sep 22, 2026
13.6%Verified-email coverage
74.2Average contacts per company
1-10Median size (employees)
5.9%Largest-city concentration · Phoenix
Sep 22, 2026Page data refreshed

Companies by employee count

1-10
17
11-50
6
51-200
4
201-500
1
501-1,000
1
1,001-5,000
4
5,001-10,000
1

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 34 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 “test centers” 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 342 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 22, 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 “test centers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many test centers are there based in the United States?

RevenueBase identified 34 company matches for test centers 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?

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

Which city has the most test centers?

Phoenix leads with 2 company records, followed by Atlanta (1) and Big Rapids (1).

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 342 professional contacts with verified work emails tracked across these 34 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 22, 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.