Company lists · Data refreshed September 2026
Top 25 Toxicology consulting firms based in the United States
RevenueBase identified 477 company matches for toxicology consulting firms associated with the United States as of September 2026 and tracks 7,225 professional contacts across them, including 2,880 with verified work emails. Chicago is the largest hub.
This list covers company matches for toxicology consulting firms 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.
The 25 largest toxicology consulting firms based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 690 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 · Sep 29, 2026 · View company records in RevenueBase | |||||
| 2 | 411 contacts → | ||||
Exact match “NMS Labs has been setting the standard for excellence in clinical toxicology and forensic testing-responding to the needs of healthcare providers, medical researchers, coroners…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 3 | 304 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 · Sep 29, 2026 · View company records in RevenueBase | |||||
| 4 | 194 contacts → | ||||
Exact match “RJ Lee Group provides comprehensive laboratory testing and scientific consulting services.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 5 | 188 contacts → | ||||
Exact match “IITRI was founded in 1936 as the research arm of the Illinois Institute of Technology (IIT).” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 6 | 159 contacts → | ||||
Exact match “Gradient is an environmental and risk science consulting firm renowned for our specialties in Toxicology, Epidemiology, Risk Assessment, Product Safety, Contaminant Fate and…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 7 | 155 contacts → | ||||
Exact match “Smithers is a leading provider of environmental risk testing to the Agrochemical, Pharmaceutical, and Chemical industries.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 8 | 140 contacts → | ||||
Exact match “Since the passage of original environmental legislation nearly four decades ago, both private and public industry have turned to Mostardi Platt for guidance in complying with air…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 9 | 132 contacts → | ||||
Exact match “Drugscan is a national toxicology and infectious disease testing laboratory that partners with organizations and providers to provide the critical testing they need for healthier…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 10 | 120 contacts → | ||||
Exact match “Pacific BioLabs is the leading West Coast provider of GMP/GLP laboratory testing services supporting Medical Device, Pharmaceutical, and Biotechnology industries.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 11 | 111 contacts → | ||||
Exact match “The EI Group, Inc.(EI) is an environmental, health and safety consulting firm headquartered in Research Triangle Park, North Carolina, with branch offices strategically located…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 12 | 97 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 13 | 88 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 14 | 87 contacts → | ||||
Exact match “Water and Air Research, Inc.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 15 | 83 contacts → | ||||
Exact match “Environmental Standards is now part of Onterris.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 16 | 74 contacts → | ||||
Exact match “Occupational Services, Incorporated is a San Diego-based professional consulting firm providing services in the areas of environmental compliance, occupational health and safety…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 17 | 63 contacts → | ||||
Exact match “Jordi Labs, an RQM+ company, delivers regulator-credible testing, toxicology, and scientific consulting that de-risk submissions and get safe MedTech products to patients faster.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 18 | 56 contacts → | ||||
Exact match “Founded in toXcel is committed to promoting and improving the safety, health, and well-being of people everywhere.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 19 | 52 contacts → | ||||
Exact match “Carnow, Conibear & Assoc, Ltd.(Carnow Conibear), a minority-owned, woman-owned and veteran-owned business, was established in 1975.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 20 | 50 contacts → | ||||
Exact match “SafeBridge is the premier resource for high-level safety and health consulting to the pharmaceutical, biotechnology, and specialty chemicals industries.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 21 | 46 contacts → | ||||
Exact match “International Safety Systems, Inc.(ISS) is a consulting company providing cost effective and high quality industrial hygiene and safety services to 35+ countries from its offices…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 22 | 46 contacts → | ||||
Exact match “EWH has earned credibility among its peers on both sides of the litigation bar and with the judiciary officers before whom its lawyers have appeared.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 23 | 45 contacts → | ||||
Exact match “Attentive Science is an FDA inspected, accredited premier global leader, excelling in GLP and nonGLP in-vivo pharmacokinetics, toxicology, and safety pharmacology services.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 24 | 44 contacts → | ||||
Exact match “Truetox Laboratories, LLC, is a revolutionary toxicology laboratory licensed in all 50 states and providing state-of-the-art employee, clinical, and forensic laboratory services.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 25 | 43 contacts → | ||||
Exact match “Provenance Consulting is now a part of Trinity Consultants.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “toxicology consulting firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 477 toxicology consulting firms based in the United States
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Toxicology consulting firms based in the United States at a glance
As of Sep 29, 2026Companies by employee count
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 477 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 “toxicology consulting firms” 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 2,880 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 “toxicology consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many toxicology consulting firms are there based in the United States?
RevenueBase identified 477 company matches for toxicology consulting firms 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?
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 toxicology consulting firms?
Chicago leads with 9 company records, followed by San Diego (7) and Washington (7).
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 2,880 professional contacts with verified work emails tracked across these 477 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.
Ready to reach these companies? Verified emails and direct dials for all 477 toxicology consulting firms based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Toxicology consulting firms by geography
- Toxicology consulting firms based in Brazil
- Toxicology consulting firms based in Canada
- Toxicology consulting firms based in France
- Toxicology consulting firms based in Germany
- Toxicology consulting firms based in India
- Toxicology consulting firms based in Italy
- Toxicology consulting firms based in Spain
- Toxicology consulting firms based in the United Kingdom
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Toxicology consulting firms based in Brazil
- Toxicology consulting firms based in Canada
- Toxicology consulting firms based in France
- Toxicology consulting firms based in Germany
- Toxicology consulting firms based in India
- Toxicology consulting firms based in Italy
Company intelligence · public preview
Top 25 toxicology consulting firms based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 477 matching company records for toxicology consulting firms based in the United States, with 7,225 tracked contacts and 2,880 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 29, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 toxicology consulting firms based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Aegis Sciences Corporationaegislabs.comHQ: Nashville, TN, United StatesReported employees: 501-1,000 | Nashville, TN, United States | 501-1,000 | Exact match | 690 contacts → |
“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 description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | NMS Labsnmslabs.com HQ: Horsham, PA, United StatesReported employees: 201-500 | Horsham, PA, United States | 201-500 | Exact match | 411 contacts → |
“NMS Labs has been setting the standard for excellence in clinical toxicology and forensic testing-responding to the needs of healthcare providers, medical researchers, coroners…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Dominion Diagnosticsdomdiag.comHQ: North Kingstown, RI, United StatesReported employees: 201-500 | North Kingstown, RI, United States | 201-500 | Exact match | 304 contacts → |
“For over 25 years, Dominion Diagnostics has been advancing patient care through trusted diagnostics as a premier urine drug testing and toxicology laboratory.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | RJ LEE Grouprjleegroup.com HQ: Pittsburgh, PA, United StatesReported employees: 201-500 | Pittsburgh, PA, United States | 201-500 | Exact match | 194 contacts → |
“RJ Lee Group provides comprehensive laboratory testing and scientific consulting services.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  IIT Research Institute Iitriiitri.orgHQ: Chicago, IL, United StatesReported employees: 51-200 | Chicago, IL, United States | 51-200 | Exact match | 188 contacts → |
“IITRI was founded in 1936 as the research arm of the Illinois Institute of Technology (IIT).” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Gradientgradientcorp.comHQ: Boston, MA, United StatesReported employees: 51-200 | Boston, MA, United States | 51-200 | Exact match | 159 contacts → |
“Gradient is an environmental and risk science consulting firm renowned for our specialties in Toxicology, Epidemiology, Risk Assessment, Product Safety, Contaminant Fate and…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Smitherssmithers.com HQ: Wareham, MA, United StatesReported employees: 1,001-5,000 | Wareham, MA, United States | 1,001-5,000 | Exact match | 155 contacts → |
“Smithers is a leading provider of environmental risk testing to the Agrochemical, Pharmaceutical, and Chemical industries.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Mostardi Plattmostardiplatt.comHQ: Elmhurst, IL, United StatesReported employees: 51-200 | Elmhurst, IL, United States | 51-200 | Exact match | 140 contacts → |
“Since the passage of original environmental legislation nearly four decades ago, both private and public industry have turned to Mostardi Platt for guidance in complying with air…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Drugscandrugscan.com HQ: Horsham, PA, United StatesReported employees: 51-200 | Horsham, PA, United States | 51-200 | Exact match | 132 contacts → |
“Drugscan is a national toxicology and infectious disease testing laboratory that partners with organizations and providers to provide the critical testing they need for healthier…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Pacific Biolabs, INCpacificbiolabs.com HQ: Hercules, CA, United StatesReported employees: 51-200 | Hercules, CA, United States | 51-200 | Exact match | 120 contacts → |
“Pacific BioLabs is the leading West Coast provider of GMP/GLP laboratory testing services supporting Medical Device, Pharmaceutical, and Biotechnology industries.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  The EI Group, INCei1.comHQ: Morrisville, NC, United StatesReported employees: 51-200 | Morrisville, NC, United States | 51-200 | Exact match | 111 contacts → |
“The EI Group, Inc.(EI) is an environmental, health and safety consulting firm headquartered in Research Triangle Park, North Carolina, with branch offices strategically located…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  A-Tech Consulting, INCatechinc.netHQ: Orange, CA, United StatesReported employees: 51-200 | Orange, CA, United States | 51-200 | Exact match | 97 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 13 |  Neptune And Company, INCneptuneinc.orgHQ: Lakewood, CO, United StatesReported employees: 51-200 | Lakewood, CO, United States | 51-200 | Exact match | 88 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 14 | Water & AIR Research, INCwaterandair.com HQ: Gainesville, FL, United StatesReported employees: 11-50 | Gainesville, FL, United States | 11-50 | Exact match | 87 contacts → |
“Water and Air Research, Inc.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | HQ: Valley Forge, PA, United StatesReported employees: 51-200 | Valley Forge, PA, United States | 51-200 | Exact match | 83 contacts → |
“Environmental Standards is now part of Onterris.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Occupational Services, INCoccserv.comHQ: San Diego, CA, United StatesReported employees: 11-50 | San Diego, CA, United States | 11-50 | Exact match | 74 contacts → |
“Occupational Services, Incorporated is a San Diego-based professional consulting firm providing services in the areas of environmental compliance, occupational health and safety…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Jordi Labs, An RQM Companyrqmplus.com HQ: Mansfield, MA, United StatesReported employees: 51-200 | Mansfield, MA, United States | 51-200 | Exact match | 63 contacts → |
“Jordi Labs, an RQM+ company, delivers regulator-credible testing, toxicology, and scientific consulting that de-risk submissions and get safe MedTech products to patients faster.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Toxceltoxcel.com HQ: Gainesville, VA, United StatesReported employees: 11-50 | Gainesville, VA, United States | 11-50 | Exact match | 56 contacts → |
“Founded in toXcel is committed to promoting and improving the safety, health, and well-being of people everywhere.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Carnow, Conibear & Assoc., LTDccaltd.comHQ: Chicago, IL, United StatesReported employees: 11-50 | Chicago, IL, United States | 11-50 | Exact match | 52 contacts → |
“Carnow, Conibear & Assoc, Ltd.(Carnow Conibear), a minority-owned, woman-owned and veteran-owned business, was established in 1975.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Trinity Consultants - Safebridgesafebridge.comHQ: Sunnyvale, CA, United StatesReported employees: 51-200 | Sunnyvale, CA, United States | 51-200 | Exact match | 50 contacts → |
“SafeBridge is the premier resource for high-level safety and health consulting to the pharmaceutical, biotechnology, and specialty chemicals industries.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  International Safety Systems, INCissehs.comHQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 46 contacts → |
“International Safety Systems, Inc.(ISS) is a consulting company providing cost effective and high quality industrial hygiene and safety services to 35+ countries from its offices…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Evert Weathersby Houffewhlaw.comHQ: Atlanta, GA, United StatesReported employees: 51-200 | Atlanta, GA, United States | 51-200 | Exact match | 46 contacts → |
“EWH has earned credibility among its peers on both sides of the litigation bar and with the judiciary officers before whom its lawyers have appeared.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Attentive Scienceattentivescience.comHQ: Stilwell, KS, United StatesReported employees: 51-200 | Stilwell, KS, United States | 51-200 | Exact match | 45 contacts → |
“Attentive Science is an FDA inspected, accredited premier global leader, excelling in GLP and nonGLP in-vivo pharmacokinetics, toxicology, and safety pharmacology services.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Truetox Laboratories, LLCtruetoxlabs.com HQ: Garden City Park, United StatesReported employees: 51-200 | Garden City Park, United States | 51-200 | Exact match | 44 contacts → |
“Truetox Laboratories, LLC, is a revolutionary toxicology laboratory licensed in all 50 states and providing state-of-the-art employee, clinical, and forensic laboratory services.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Provenance Consultingtrinityconsultants.comHQ: Borger, TX, United StatesReported employees: 51-200 | Borger, TX, United States | 51-200 | Exact match | 43 contacts → |
“Provenance Consulting is now a part of Trinity Consultants.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 477 company matches
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Toxicology consulting firms: dataset insights
September 29, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
475 records in the displayed employee bands.
2 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 477 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 29, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for toxicology consulting firms?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many toxicology consulting firms did RevenueBase find based in the United States?
The saved snapshot records 477 matching company records, 7,225 tracked contacts and 2,880 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 29, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Toxicology consulting firms by geography
- Toxicology consulting firms based in Brazil
- Toxicology consulting firms based in Canada
- Toxicology consulting firms based in France
- Toxicology consulting firms based in Germany
- Toxicology consulting firms based in India
- Toxicology consulting firms based in Italy
- Toxicology consulting firms based in Spain
- Toxicology consulting firms based in the United Kingdom
Cite this list
RevenueBase Data Team. Top 25 toxicology consulting firms based in the United States. Snapshot: September 29, 2026. https://revenuebase.ai/companies/toxicology-consulting-firms/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Toxicology consulting firms based in Brazil
- Toxicology consulting firms based in Canada
- Toxicology consulting firms based in France
- Toxicology consulting firms based in Germany
- Toxicology consulting firms based in India
- Toxicology consulting firms based in Italy
Company intelligence · public preview
Top 25 toxicology consulting firms based in the United States
RevenueBase records 477 matching company records for toxicology consulting firms based in the United States, with 7,225 tracked contacts and 2,880 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 29, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 toxicology consulting firms based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Aegis Sciences Corporationaegislabs.com HQ: Nashville, TN, United StatesReported employees: 501-1,000 | Nashville, TN, United States | 501-1,000 | Exact match | 690 contacts → |
“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 description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | NMS Labsnmslabs.com HQ: Horsham, PA, United StatesReported employees: 201-500 | Horsham, PA, United States | 201-500 | Exact match | 411 contacts → |
“NMS Labs has been setting the standard for excellence in clinical toxicology and forensic testing-responding to the needs of healthcare providers, medical researchers, coroners…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Dominion Diagnosticsdomdiag.com HQ: North Kingstown, RI, United StatesReported employees: 201-500 | North Kingstown, RI, United States | 201-500 | Exact match | 304 contacts → |
“For over 25 years, Dominion Diagnostics has been advancing patient care through trusted diagnostics as a premier urine drug testing and toxicology laboratory.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | RJ LEE Grouprjleegroup.com HQ: Pittsburgh, PA, United StatesReported employees: 201-500 | Pittsburgh, PA, United States | 201-500 | Exact match | 194 contacts → |
“RJ Lee Group provides comprehensive laboratory testing and scientific consulting services.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | IIT Research Institute Iitriiitri.org HQ: Chicago, IL, United StatesReported employees: 51-200 | Chicago, IL, United States | 51-200 | Exact match | 188 contacts → |
“IITRI was founded in 1936 as the research arm of the Illinois Institute of Technology (IIT).” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Gradientgradientcorp.com HQ: Boston, MA, United StatesReported employees: 51-200 | Boston, MA, United States | 51-200 | Exact match | 159 contacts → |
“Gradient is an environmental and risk science consulting firm renowned for our specialties in Toxicology, Epidemiology, Risk Assessment, Product Safety, Contaminant Fate and…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Smitherssmithers.com HQ: Wareham, MA, United StatesReported employees: 1,001-5,000 | Wareham, MA, United States | 1,001-5,000 | Exact match | 155 contacts → |
“Smithers is a leading provider of environmental risk testing to the Agrochemical, Pharmaceutical, and Chemical industries.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Mostardi Plattmostardiplatt.com HQ: Elmhurst, IL, United StatesReported employees: 51-200 | Elmhurst, IL, United States | 51-200 | Exact match | 140 contacts → |
“Since the passage of original environmental legislation nearly four decades ago, both private and public industry have turned to Mostardi Platt for guidance in complying with air…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Drugscandrugscan.com HQ: Horsham, PA, United StatesReported employees: 51-200 | Horsham, PA, United States | 51-200 | Exact match | 132 contacts → |
“Drugscan is a national toxicology and infectious disease testing laboratory that partners with organizations and providers to provide the critical testing they need for healthier…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Pacific Biolabs, INCpacificbiolabs.com HQ: Hercules, CA, United StatesReported employees: 51-200 | Hercules, CA, United States | 51-200 | Exact match | 120 contacts → |
“Pacific BioLabs is the leading West Coast provider of GMP/GLP laboratory testing services supporting Medical Device, Pharmaceutical, and Biotechnology industries.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | The EI Group, INCei1.com HQ: Morrisville, NC, United StatesReported employees: 51-200 | Morrisville, NC, United States | 51-200 | Exact match | 111 contacts → |
“The EI Group, Inc.(EI) is an environmental, health and safety consulting firm headquartered in Research Triangle Park, North Carolina, with branch offices strategically located…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | A-Tech Consulting, INCatechinc.net HQ: Orange, CA, United StatesReported employees: 51-200 | Orange, CA, United States | 51-200 | Exact match | 97 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 13 | Neptune And Company, INCneptuneinc.org HQ: Lakewood, CO, United StatesReported employees: 51-200 | Lakewood, CO, United States | 51-200 | Exact match | 88 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 14 | Water & AIR Research, INCwaterandair.com HQ: Gainesville, FL, United StatesReported employees: 11-50 | Gainesville, FL, United States | 11-50 | Exact match | 87 contacts → |
“Water and Air Research, Inc.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | HQ: Valley Forge, PA, United StatesReported employees: 51-200 | Valley Forge, PA, United States | 51-200 | Exact match | 83 contacts → |
“Environmental Standards is now part of Onterris.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Occupational Services, INCoccserv.com HQ: San Diego, CA, United StatesReported employees: 11-50 | San Diego, CA, United States | 11-50 | Exact match | 74 contacts → |
“Occupational Services, Incorporated is a San Diego-based professional consulting firm providing services in the areas of environmental compliance, occupational health and safety…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Jordi Labs, An RQM Companyrqmplus.com HQ: Mansfield, MA, United StatesReported employees: 51-200 | Mansfield, MA, United States | 51-200 | Exact match | 63 contacts → |
“Jordi Labs, an RQM+ company, delivers regulator-credible testing, toxicology, and scientific consulting that de-risk submissions and get safe MedTech products to patients faster.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Toxceltoxcel.com HQ: Gainesville, VA, United StatesReported employees: 11-50 | Gainesville, VA, United States | 11-50 | Exact match | 56 contacts → |
“Founded in toXcel is committed to promoting and improving the safety, health, and well-being of people everywhere.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Carnow, Conibear & Assoc., LTDccaltd.com HQ: Chicago, IL, United StatesReported employees: 11-50 | Chicago, IL, United States | 11-50 | Exact match | 52 contacts → |
“Carnow, Conibear & Assoc, Ltd.(Carnow Conibear), a minority-owned, woman-owned and veteran-owned business, was established in 1975.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Trinity Consultants - Safebridgesafebridge.com HQ: Sunnyvale, CA, United StatesReported employees: 51-200 | Sunnyvale, CA, United States | 51-200 | Exact match | 50 contacts → |
“SafeBridge is the premier resource for high-level safety and health consulting to the pharmaceutical, biotechnology, and specialty chemicals industries.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | International Safety Systems, INCissehs.com HQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 46 contacts → |
“International Safety Systems, Inc.(ISS) is a consulting company providing cost effective and high quality industrial hygiene and safety services to 35+ countries from its offices…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Evert Weathersby Houffewhlaw.com HQ: Atlanta, GA, United StatesReported employees: 51-200 | Atlanta, GA, United States | 51-200 | Exact match | 46 contacts → |
“EWH has earned credibility among its peers on both sides of the litigation bar and with the judiciary officers before whom its lawyers have appeared.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Attentive Scienceattentivescience.com HQ: Stilwell, KS, United StatesReported employees: 51-200 | Stilwell, KS, United States | 51-200 | Exact match | 45 contacts → |
“Attentive Science is an FDA inspected, accredited premier global leader, excelling in GLP and nonGLP in-vivo pharmacokinetics, toxicology, and safety pharmacology services.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Truetox Laboratories, LLCtruetoxlabs.com HQ: Garden City Park, United StatesReported employees: 51-200 | Garden City Park, United States | 51-200 | Exact match | 44 contacts → |
“Truetox Laboratories, LLC, is a revolutionary toxicology laboratory licensed in all 50 states and providing state-of-the-art employee, clinical, and forensic laboratory services.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Provenance Consultingtrinityconsultants.com HQ: Borger, TX, United StatesReported employees: 51-200 | Borger, TX, United States | 51-200 | Exact match | 43 contacts → |
“Provenance Consulting is now a part of Trinity Consultants.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 477 company matches
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Toxicology consulting firms: dataset insights
September 29, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
475 records in the displayed employee bands.
2 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 477 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 29, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for toxicology consulting firms?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many toxicology consulting firms did RevenueBase find based in the United States?
The saved snapshot records 477 matching company records, 7,225 tracked contacts and 2,880 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 29, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Toxicology consulting firms by geography
- Toxicology consulting firms based in Brazil
- Toxicology consulting firms based in Canada
- Toxicology consulting firms based in France
- Toxicology consulting firms based in Germany
- Toxicology consulting firms based in India
- Toxicology consulting firms based in Italy
- Toxicology consulting firms based in Spain
- Toxicology consulting firms based in the United Kingdom
Cite this list
RevenueBase Data Team. Top 25 toxicology consulting firms based in the United States. Snapshot: September 29, 2026. https://revenuebase.ai/companies/toxicology-consulting-firms/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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- Toxicology consulting firms based in Brazil
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- Toxicology consulting firms based in France
- Toxicology consulting firms based in Germany
- Toxicology consulting firms based in India
- Toxicology consulting firms based in Italy