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We come to your site or your employees go to one of 8,500+ certified locations near them — your choice.
Employer workplace testing
One Partner. Every Drug Testing Solution.
DOT and Non-DOT Drug & Alcohol Testing — Nationwide
Whether you need a certified collector at your facility within hours, a driver tested at one of 8,500+ certified collection sites nationwide, full DOT compliance and C/TPA management through FMCSA, or help building a workplace drug testing program from scratch — we have you covered. No matter the size of your fleet or workforce, OnSite Employer Testing is your single point of contact for everything drug and alcohol testing related. We come to you, your employees come to us, or we manage your entire compliance program remotely. Simple, affordable, and fully compliant.
Request On-Site TestingSend My Employees to a Nearby Test SiteC/TPA & DOT ComplianceStart a Drug Testing Program
Registered FMCSA Drug & Alcohol Clearinghouse C/TPA (Consortium/Third-Party Administrator)
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How Can We Help You Today?
Running a hiring event or job fair?
Certified collectors test candidates on site so you can make same-day hiring decisions.
Who We Are
OnSite Employer Testing provides on-site drug testing and mobile drug testing services for employers and businesses, headquartered in Rolling Meadows, Illinois. We coordinate onsite testing and on-site testing for businesses nationwide—including DOT collections, non DOT drug test programs, and random drug testing program support—through qualified professionals at job sites, offices, warehouses, and fleet yards, with on-time screening and clear ETAs when coverage allows.
Explore non-DOT drug testing and random drug testing programs, or browse all employer testing services.
Why Employers Choose OnSite Employer Testing
Clinic runs add travel time, waiting-room delays, missed shifts, and no-shows. Mobile collections keep your team closer to the job—with on-time screening and a single coordinator for workplace testing.
Less downtime, fewer clinic trips
Collections happen at your site—yards, warehouses, offices, and job trailers—so crews spend less time off the floor and in waiting rooms.
On-time collection — we arrive when you need us
On-time screening matters for hiring windows, random draws, and post-incident response. We confirm ETAs up front and schedule collectors around your shifts—not a clinic desk.
One point of contact
HR, safety, and DER teams work with a single coordinator for scheduling, updates, and follow-through instead of chasing multiple vendors.
DOT and non-DOT programs
Post-accident, random, pre-employment, reasonable suspicion, and breath alcohol collections aligned with your written program.
Multi-location support
Share several addresses, donor counts, and timing windows—we confirm what is workable for each site before you commit.
Time & productivity
Why On-Site Testing Can Save More Than It Costs
The real cost of employee drug testing is not only the test price. For many employers, the bigger cost is lost work time. Learn how unexpected delays impact your bottom line in our guide on the real cost of employee downtime.
10 employees sent to a clinic = about 15 labor hours lost
10 employees tested on-site = about 1.7 labor hours total
Potential time saved: about 13+ labor hours
Less travel. Less waiting. Less downtime.
Example only. Actual time savings may vary based on employee count, collection type, site setup, travel distance, and scheduling.
Example · 10 employees
Sent to a clinicabout 15 hrs
Tested on-siteabout 1.7 hrs
15
labor hrs at clinic
1.7
labor hrs on-site
13+
potential hrs saved
Growing employers
Built for Growing Employers
Whether you run one yard or locations in several states, we help HR, safety, fleets, warehouses, staffing firms, and construction operations schedule testing around shifts—not around a clinic's front desk.
- HR teams
- Designated Employer Representatives (DERs)
- Safety managers
- Transportation fleets
- Warehouses & distribution
- Staffing agencies
- Construction operations
- Manufacturing plants
- Aviation & airline employers
- Third-party administrators (TPAs)
By industry: Browse industriesTransportationAviation & AirlinesConstructionManufacturingWarehousingEnergy & UtilitiesWaste & SanitationSchool DistrictsHealthcareStaffingData Centers
Workplace programs
Services We Coordinate
DOT and non-DOT collections for post-accident, random, pre-employment, and reasonable suspicion testing. Each link explains scope, triggers, and how a draw fits a yard, warehouse, or job-site trailer. We offer customizable testing configurations—see our breakdown of workplace drug testing panels explained to choose the right fit for your facility.
Full DOT & C/TPA Compliance Management
Skip the administrative headache. As a registered Consortium/Third-Party Administrator (C/TPA) in the FMCSA Clearinghouse, we securely manage your mandatory pre-employment queries, annual driver reviews, and federal violation reporting. We keep your fleet 100% audit-ready while minimizing driver downtime nationwide.
- DOT drug testing
- Non-DOT drug testing
- Post-accident testing
- Reasonable suspicion testing
- Random testing programs
- Breath alcohol testing
- Oral fluid, hair, nail, and PEth testing when applicable
Start with mobile and on-site drug testing, non-DOT drug testing, or a random drug testing program— then the full services list. Coverage: service areas. Compare DOT vs non-DOT or the employer guide. Breath alcohol, oral fluid, hair, PEth, blood, nail, and similar tests follow different timing and rules—see the specialized section on services. More depth in resources.
How we work
National Coordination. Local Execution.
OnSite Employer Testing is headquartered in Rolling Meadows, Illinois. We do not operate a clinic in every state—we coordinate mobile collections through qualified testing professionals where your program, timing, and geography allow. Availability depends on location, test type, site access, and collector scheduling.
- 1Request coverage. Send site addresses, DOT or non-DOT program details, and how soon people need to be seen—including post-accident or shift-change windows.
- 2Confirm availability. We respond with what fits your addresses and times—a yes, an alternate window, or next steps if a site needs a different approach. We confirm before you commit.
- 3On-site collection. Collectors meet your team at the yard, warehouse, plant, office, or job site and complete the steps and paperwork your program requires.
- 4Results follow your program. Specimens and paperwork go to your lab and administrator through the same path your program already uses.
Frequently Asked Questions
- What is mobile employer drug testing?
- Mobile employer drug testing means a qualified collector comes to your workplace to collect specimens—urine, oral fluid, or breath alcohol—instead of sending employees to a clinic. OnSite Employer Testing coordinates those collections so HR and safety teams manage testing from one contact.
- Do you coordinate DOT drug testing?
- Yes. We coordinate DOT-regulated drug and alcohol testing under 49 CFR Part 40 for employers covered by FMCSA, FAA, FRA, FTA, PHMSA, and USCG programs.
- What areas do you serve?
- We are headquartered in Rolling Meadows, Illinois and coordinate mobile employer testing for worksites throughout the United States. Coverage depends on your location and testing requirements—we confirm availability before scheduling.
- Can you support employers with multiple locations?
- Yes. Share each address, donor counts, and program type during intake. We review timing, collector availability, and site access for every location and respond with what we can schedule.
- Can you arrive on time for workplace screening?
- Yes. On-time screening is part of how we operate. After we confirm coverage for your location, we provide clear ETAs and schedule collectors to arrive when you need them—around shift windows, random draws, and urgent post-incident requests whenever availability allows.
- How do I get started?
- Call us at (219) 315-0345 or fill out our quote request form. We'll respond with a clear plan based on your location and testing needs.
Ready to coordinate mobile testing for your team?
Call us at (219) 315-0345 or request a quote. We confirm availability for your locations and testing requirements before you commit.
Mobile Testing for Individuals · Nationwide
Need Testing for Yourself?
OnSite coordinates private drug testing, DNA testing, and personal lab panels for individuals and families—with no employer account, doctor referral, or insurance required. Our certified mobile collectors bring professional testing directly to your doorstep nationwide, subject to coverage confirmation for your location.
Drug Testing for Individuals
Need a test for a court case, child custody, personal reasons, or individual DOT compliance? We handle 5-panel, 10-panel, fentanyl, and ETG alcohol testing with complete privacy. Results in 2–3 business days.
See drug tests →DNA Testing
Paternity tests, legal DNA, prenatal paternity, sibling, grandparent, and immigration DNA. Processed via an AABB-accredited lab. Results in 5–7 business days.
See DNA tests →Blood Work & Lab Panels
Coming SoonPrivate blood draws for wellness panels, STD testing, hormone levels, and more. No doctor referral required.
Explore Local Testing Options