Company lists · Data refreshed October 2026

Top 25 Hair drug test suppliers based in the United States

RevenueBase identified 252 company matches for hair drug test suppliers associated with the United States as of October 2026 and tracks 4,261 professional contacts across them, including 1,623 with verified work emails. Greenville is the largest hub.

This list covers company matches for hair drug test suppliers 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 October 26, 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 Oct 26, 2026 How this list was built
252Companies
4,261Contacts tracked
1,623Verified emails
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The 25 largest hair drug test suppliers based in the United States

Ranked by team size
Top 25 of 252 company matches for hair drug test suppliers based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 26, 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 matchNashville, TN, United StatesHQ recorded Oct 26, 2026501-1,000717 contacts →

Exact match

“Founded in 1990, Aegis Sciences Corporation is a forensic toxicology and healthcare laboratory that provides science-driven drug testing and consulting services based in…”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
2Exact matchSan Diego, CA, United StatesHQ recorded Oct 26, 2026501-1,000684 contacts →

Exact match

“Millennium Health is an accredited specialty laboratory with over a decade of experience delivering timely, accurate, clinically-actionable information through our nationwide…”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
3Exact matchGreenville, SC, United StatesHQ recorded Oct 26, 2026201-500333 contacts →

Exact match

“ARCpoint Labs is a trusted industry leader serving our communities with drug, alcohol, DNA, and clinical testing solutions.”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
4Exact matchNorth Kingstown, RI, United StatesHQ recorded Oct 26, 2026201-500320 contacts →

Exact match

“For over 25 years, Dominion Diagnostics has been advancing patient care through trusted diagnostics as a premier urine drug testing and toxicology laboratory.”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
5Exact matchLenexa, KS, United StatesHQ recorded Oct 26, 2026501-1,000229 contacts →

Exact match

“Quest Diagnostics Workforce Health Solutions drug offers reliable workforce drug testing, an extensive collection site network, and personal service and support.”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
6Exact matchNew Brighton, MN, United StatesHQ recorded Oct 26, 2026501-1,000219 contacts →

Exact match

“MEDTOX Laboratories contains a full-service clinical laboratory as well as a SAMHSA-certified drug testing laboratory.”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
7Exact matchSan Diego, CA, United StatesHQ recorded Oct 26, 202651-200153 contacts →

Exact match

“Phamatech was founded in 1991 by a small group of dedicated scientists and business executives.”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
8Exact matchDallas, TX, United StatesHQ recorded Oct 26, 2026201-500111 contacts →

Exact match

“Psychemedics develops and delivers the world’s leading hair drug test for detecting drugs of abuse.”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
9Exact matchMinneapolis, MN, United StatesHQ recorded Oct 26, 202651-20092 contacts →

Exact match

“Premier Biotech is a leading manufacturer of rapid drug testing diagnostic devices.”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
10Exact matchWake Forest, NC, United StatesHQ recorded Oct 26, 202651-20081 contacts →

Exact match

“We bring radical ideas in analytical testing to the clinical laboratory.”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
11Exact matchOrlando, FL, United StatesHQ recorded Oct 26, 202651-20070 contacts →

Exact match

“Genesis Reference Laboratories offers a comprehensive test catalog for a full range of detection capabilities.”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
12Exact matchPalm Springs, FL, United StatesHQ recorded Oct 26, 202611-5058 contacts →

Exact match

“NMS Management Services is your one-stop White Glove Concierge TPA (Third Party Administrator of Occupational Testing) offering global employment screening services, including…”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
13Exact matchHayward, CA, United StatesHQ recorded Oct 26, 202651-20048 contacts →

Exact match

“Welcome to National Labs!”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
14Exact matchReno, NV, United StatesHQ recorded Oct 26, 202651-20048 contacts →

Exact match

“Our Co-Founders, Denis Grizelj and Matthew Rutledge founded MD Labs in 2011 with the goal to specialize in prescription monitoring toxicology and serve physicians across the…”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
15Exact matchIrvine, CA, United StatesHQ recorded Oct 26, 202651-20034 contacts →

Exact match

“Monarch Diagnostics is a diagnostic testing laboratory committed to delivering accurate, timely results that support recovery-focused care.”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
16Exact matchSanta Rosa Beach, FL, United StatesHQ recorded Oct 26, 202651-20032 contacts →

Exact match

“Empowering physicians and enlightening patients by utilizing the best-in-class technology, systems, and employees.”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
17Exact matchAsheville, NC, United StatesHQ recorded Oct 26, 202611-5028 contacts →

Exact match

“At Keystone Laboratory we provide the most comprehensive, accurate qualitative and quantitative drug screening results centered around our industry – leading customer service.”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
18Exact matchAsheville, NC, United StatesHQ recorded Oct 26, 202651-20027 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
19Exact matchLinden, NJ, United StatesHQ recorded Oct 26, 202651-20026 contacts →

Exact match

“Family owned and operated, Ammon Labs has been the preferred drug testing laboratory of addiction treatment professionals and healthcare partners for over 20 years.”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
20Exact matchOcala, FL, United StatesHQ recorded Oct 26, 202611-5025 contacts →

Exact match

“Nona Scientific is a toxicology laboratory utilizing state-of-the-art technology to provide its clients with the most accurate results available.”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
21Exact matchMelbourne, FL, United StatesHQ recorded Oct 26, 202611-5024 contacts →

Exact match

“We offer drug test result reporting by state of the art MRO services, drug testing software, immediate drug tests, drug & alcohol testing for employees.”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
22Exact matchLyndhurst, NJ, United StatesHQ recorded Oct 26, 202651-20015 contacts →

Exact match

“Our mission is to provide quality care and better patient outcomes through excellence in drug testing.”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
23Exact matchSalem, NH, United StatesHQ recorded Oct 26, 202651-20013 contacts →

Exact match

“Welcome to the New Era of Responsible Prescribing Summit Diagnostics provides medical professionals with drug safety programs for their patients.”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
24Exact matchIrvine, CA, United StatesHQ recorded Oct 26, 202611-5012 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
25Exact matchManhattan Beach, CA, United StatesHQ recorded Oct 26, 2026201-50011 contacts →

Exact match

“Origin has been an industry leader of Employment Drug Testing, Occupational Health & Background Screening Services.”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase

Showing 25 of 252 hair drug test suppliers based in the United States

See the full list, filter by size, metro and specialty, and access 1,623 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Hair drug test suppliers based in the United States at a glance

As of Oct 26, 2026
38.1%Verified-email coverage
16.9Average contacts per company
1-10Median size (employees)
2.4%Largest-city concentration · Greenville
Oct 26, 2026Page data refreshed

Companies by employee count

1-10
156
11-50
55
51-200
27
201-500
6
501-1,000
4
1,001-5,000
2
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 252 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 “hair drug test suppliers” 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 1,623 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 October 26, 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 “hair drug test suppliers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many hair drug test suppliers are there based in the United States?

RevenueBase identified 252 company matches for hair drug test suppliers associated with the United States as of October 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?

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

Which city has the most hair drug test suppliers?

Greenville leads with 6 company records, followed by Atlanta (5) and San Diego (5).

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 1,623 professional contacts with verified work emails tracked across these 252 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 October 26, 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.