Company lists · Data refreshed September 2026

Top 25 Quality assurance lab staffing agencies based in the United States

RevenueBase identified 1,401 company matches for quality assurance lab staffing agencies associated with the United States as of September 2026 and tracks 34,368 professional contacts across them, including 6,084 with verified work emails. New York is the largest hub.

This list covers company matches for quality assurance lab staffing agencies 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 29, 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 29, 2026 How this list was built
1,401Companies
34,368Contacts tracked
6,084Verified emails
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The 25 largest quality assurance lab staffing agencies based in the United States

Ranked by team size
Top 25 of 1,401 company matches for quality assurance lab staffing agencies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 29, 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 matchKearney, MO, United StatesHQ recorded Sep 29, 2026n/a1,755 contacts →

Exact match

“LaborMAX Staffing is your reliable provider of quality pre-screened contingent workers.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
2Exact matchRaleigh, NC, United StatesHQ recorded Sep 29, 20261,001-5,0001,088 contacts →

Exact match

“Founded in 2012, Planet Pharma is a global leader in life sciences recruitment and staffing, specializing in Pharmaceuticals, Biotechnology, Medical Device, Labs & Healthcare…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
3Exact matchBrookfield, WI, United StatesHQ recorded Sep 29, 2026201-5001,019 contacts →

Exact match

“Founded in 1985, QPS Employment Group has grown from a two-person operation to one of the nation's leading staffing and recruiting firms, with more than 300 internal employees…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
4Exact matchIrving, TX, United StatesHQ recorded Sep 29, 2026201-500881 contacts →

Exact match

“IMCS Group is an IT, Healthcare, and Professional Staffing Company that helps Enterprises optimize the business value of their Staffing investments and enables them to achieve…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
5Exact matchEdison, NJ, United StatesHQ recorded Sep 29, 2026501-1,000762 contacts →

Exact match

“Integrated Resources Inc.(IRI) is a professional staffing firm specializing in contract, consulting & full time positions in the area of Information Technology, Life Science and…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
6Exact matchKalamazoo, MI, United StatesHQ recorded Sep 29, 20261,001-5,000653 contacts →

Exact match

“Trillium Staffing Solutions is an employment service specializing in staffing, training, testing, on-site services, human resources and safety consulting.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
7Exact matchEl Segundo, CA, United StatesHQ recorded Sep 29, 2026501-1,000651 contacts →

Exact match

“Epic Staffing Group is a diversified national provider of staffing services to the Life Sciences and Healthcare industries.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
8Exact matchLouisville, KY, United StatesHQ recorded Sep 29, 2026201-500646 contacts →

Exact match

“Malone takes care of business by taking care of people.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
9Exact matchBirmingham, AL, United StatesHQ recorded Sep 29, 202610001+624 contacts →

Exact match

“Automation Personnel Services was founded in Birmingham, AL almost 30 years ago and has expanded coast to coast with 40 Branch offices in eleven states.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
10Exact matchHouston, TX, United StatesHQ recorded Sep 29, 20261,001-5,000579 contacts →

Exact match

“LINK Staffing has been placing competent, dependable talent with Texas employers since 1980.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
11Exact matchTupelo, MS, United StatesHQ recorded Sep 29, 20265,001-10,000443 contacts →

Exact match

“Wise Staffing Group, headquartered in Mississippi, is a full service human resource company specializing in temporary and career staffing with an emphasis on providing excellent…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
12Exact matchTacoma, WA, United StatesHQ recorded Sep 29, 202651-200336 contacts →

Exact match

“We offer powered staffing solutions for your business.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
13Exact matchTyngsboro, MA, United StatesHQ recorded Sep 29, 20261,001-5,000316 contacts →

Exact match

“Marathon is one of the largest regional employers, supplying temporary, on-site, contract, contract-to-hire, and direct hire employees to companies throughout the United States.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
14Exact matchChicago, IL, United StatesHQ recorded Sep 29, 202651-200310 contacts →

Exact match

“Connect Search, LLC is a boutique staffing firm founded by a group of partners who share the same vision and are all recruiters at heart.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
15Exact matchLutherville, MD, United StatesHQ recorded Sep 29, 2026n/a299 contacts →

Exact match

“People Built.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
16Exact matchEdison, NJ, United StatesHQ recorded Sep 29, 202651-200254 contacts →

Exact match

“At Joulé, we believe our world is filled with possibilities – where character, integrity, and commitment drive our purpose.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
17Exact matchBrea, CA, United StatesHQ recorded Sep 29, 20261,001-5,000242 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
18Exact matchEverett, WA, United StatesHQ recorded Sep 29, 2026501-1,000236 contacts →

Exact match

“Verstela is a premier staffing provider, offering temporary, temp-to-hire, and direct hire solutions across a wide range of industries.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
19Exact matchUtica, MI, United StatesHQ recorded Sep 29, 2026501-1,000226 contacts →

Exact match

“A-Line Staffing Solutions is a premier staffing company that supplies professionals to the Healthcare, Insurance, Pharmaceutical, and Information Technology industries.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
20Exact matchMargate, FL, United StatesHQ recorded Sep 29, 20261,001-5,000202 contacts →

Exact match

“GL Staffing Services is one of the largest privately owned staffing companies in Florida.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
21Exact matchSan Ramon, CA, United StatesHQ recorded Sep 29, 2026201-500201 contacts →

Exact match

“At Consolidated Engineering Laboratories (CEL) we consider ourselves more than a Testing Laboratory.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
22Exact matchFalls Church, VA, United StatesHQ recorded Sep 29, 2026501-1,000199 contacts →

Exact match

“NVT Staffing is a direct reflection of the rapid growth and expansion of our parent company, Northern Virginia Temporaries, Inc.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
23Exact matchUnion, NJ, United StatesHQ recorded Sep 29, 202651-200193 contacts →

Exact match

“For nearly 50 years Patel Consultants has been assisting business leaders and hiring managers solve their recruiting and staffing challenges.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
24Exact matchCharlotte, NC, United StatesHQ recorded Sep 29, 202651-200178 contacts →

Exact match

“Lighthouse Lab Services is the industry’s leading laboratory services platform, helping organizations build, operate, optimize, and grow high-performing laboratories.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
25Exact matchDallas, TX, United StatesHQ recorded Sep 29, 2026501-1,000175 contacts →

Exact match

“Core Personnel is a premiere staffing agency with offices in Dallas, Houston, Austin and Las Vegas.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase

Showing 25 of 1,401 quality assurance lab staffing agencies based in the United States

See the full list, filter by size, metro and specialty, and access 6,084 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Quality assurance lab staffing agencies based in the United States at a glance

As of Sep 29, 2026
17.7%Verified-email coverage
24.5Average contacts per company
11-50Median size (employees)
3.0%Largest-city concentration · New York
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
524
11-50
400
51-200
285
201-500
113
501-1,000
41
1,001-5,000
31
5,001-10,000
5
10001+
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 1,401 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 “quality assurance lab staffing agencies” 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 6,084 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 29, 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 “quality assurance lab staffing agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many quality assurance lab staffing agencies are there based in the United States?

RevenueBase identified 1,401 company matches for quality assurance lab staffing agencies 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?

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

Which city has the most quality assurance lab staffing agencies?

New York leads with 42 company records, followed by Houston (31) and Chicago (20).

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 6,084 professional contacts with verified work emails tracked across these 1,401 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 29, 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.