DOT-COMPLIANT · ON-SITE EMPLOYER DRUG TESTING
Mobile Employer Drug Testing in Laredo, Texas
We travel to your carrier terminal, intermodal yard, or border crossing facility and administer federally compliant DOT and Non-DOT collections on-site. No clinic. No missed gate cuts.
Laredo is the busiest inland port in the United States by trade value, handling more U.S.–Mexico trade than any other land border crossing in the country. Over 16,000 commercial trucks cross the Laredo bridges each day. Every U.S. CDL driver operating an FMCSA-regulated commercial motor vehicle out of a Laredo carrier terminal is subject to 49 CFR Part 382 drug and alcohol testing requirements. Union Pacific and BNSF both operate intermodal rail facilities in Laredo — UP's Laredo International Rail Bridge connects directly to Ferrocarriles Nacionales de México, making Laredo one of the only U.S. cities with a direct Class I railroad bridge crossing into Mexico. The concentration of FMCSA-regulated trucking employers in Laredo is unmatched anywhere in the United States outside of the largest metro freight hubs. For trucking employers in this market, a clinic-based testing model is operationally incompatible with the 24-hour crossing schedule that border freight demands.
OnSite Employer Testing coordinates mobile drug testing collections at your Laredo carrier terminal, intermodal facility, or fleet yard. We do not operate a clinic. Review how it works or browse all locations we serve.
Why Laredo Employers Need Mobile Testing
Laredo's trucking economy runs on crossing velocity. U.S.-domiciled CDL drivers staging at Laredo terminals for northbound loads operate on schedules dictated by crossing appointment windows, broker release times, and shipper delivery commitments that have no tolerance for a two-hour clinic excursion. A pre-employment test that takes a driver off-site means a late start on a run that was already committed to a shipper in Chicago or Dallas. Random selections for a fleet of 50 Laredo-based drivers represent 25 required tests per year under the FMCSA 50% random rate — that is an ongoing mobile collection volume that a single clinic cannot efficiently handle for a fleet that operates 24 hours a day.
The Union Pacific and BNSF intermodal facilities in Laredo add FRA-covered employees to the market's DOT testing landscape — a detail that most local testing pages miss entirely. Locomotive engineers and conductors at UP's Laredo International Rail Bridge operation are FRA-regulated regardless of the international character of their assignment. Mobile testing at the rail yard and at carrier terminals in the same market visit is an efficiency that no clinic-based model can replicate.
Program design and compliance obligations remain your responsibility under applicable law — we coordinate the collections.
Industries We Serve in Laredo
Border Trucking and FMCSA-Regulated Carriers
Laredo is home to hundreds of FMCSA-registered motor carriers whose U.S.-domiciled CDL drivers handle northbound freight from Mexican manufacturers and southbound empty or loaded return hauls. Carriers including Werner Enterprises, J.B. Hunt, Schneider National, and dozens of regional and local Laredo-based operators maintain active pre-employment, random, post-accident, and reasonable suspicion programs for their Laredo terminal drivers. We coordinate logistics and transportation collections at carrier terminals, truck staging areas, and fleet yards throughout Webb County — timed to dispatch schedules so drivers are not pulled from the crossing queue for clinic appointments.
Intermodal Rail — Union Pacific and BNSF
Union Pacific operates the Laredo International Rail Bridge — a direct Class I rail crossing to Ferrocarriles Nacionales de México — making Laredo one of the most strategically important rail border crossings in North America. BNSF also provides intermodal service in the Laredo region. FRA 49 CFR Part 219 requires covered railroad employees at both carriers' Laredo operations to participate in random, post-accident, and reasonable suspicion programs. We coordinate FRA-compliant DOT drug testing collections at rail facilities and crew reporting points in Webb County.
Customs Brokers and Freight Forwarders
Laredo's customs brokerage community is one of the largest in the United States, with over 500 licensed customs brokers and freight forwarders operating in the city. While customs brokers themselves are not directly DOT-regulated, many operate their own drayage fleets or logistics arms that require FMCSA compliance. Their administrative staff sometimes oversee or DER-coordinate testing programs for affiliated carriers. We coordinate collections for the logistics and operational arms of Laredo's freight brokerage community at their office and terminal facilities.
Warehousing and Cross-Dock Operations
Laredo's industrial parks — including Laredo Industrial Park, Colombia Solidarity Bridge Industrial Park, and the World Trade Bridge logistics corridor — host warehousing and distribution operations handling cross-border freight staging, customs bonded warehousing, and transload services. CDL truck drivers and forklift operators at those facilities require FMCSA and Non-DOT testing programs. We coordinate collections at cross-dock and warehousing facilities throughout the Laredo industrial park network.
Testing Services Available in Laredo
We coordinate the following collections for Laredo-area employers:
DOT drug testing collections (FMCSA, FRA, FAA, FTA, PHMSA)
- Pre-employment drug and alcohol testing
- Reasonable suspicion and return-to-duty testing
Breath alcohol testing (BAT certified)
- Oral fluid drug testing
Mobile and on-site collections at your facility, yard, or job site
Communities We Serve Near Laredo
In addition to Laredo, we serve employers throughout Webb County and surrounding areas including Nuevo Laredo-adjacent U.S. facilities, the Colombia Solidarity Bridge corridor, Cotulla, and Eagle Pass.
Employers at the World Trade Bridge, Colombia Solidarity Bridge, Laredo International Rail Bridge, and throughout Laredo's industrial park network are within our mobile service range. Use our instant quote calculator to scope your collection or visit our service areas page.
Questions from employers in this region
We operate a Laredo terminal for a major truckload carrier. Our drivers pre-clear customs before crossing. Does pre-clearance change the timing for DOT pre-employment testing?
No. FMCSA 49 CFR Part 382 requires a verified negative pre-employment drug test result before a CDL driver performs their first safety-sensitive function — regardless of customs pre-clearance status or the international character of the load. The pre-employment test must be completed and a verified negative result received before the driver operates the vehicle.
Our Laredo fleet has 80 CDL drivers. At the FMCSA 50% annual random drug testing rate, we need 40 tests per year. Can you manage that volume at our terminal?
Yes. High-volume random drug testing program support for large fleets is a standard use case. We coordinate with your DER on selection schedules and travel to your terminal to complete collections in batches that fit your dispatch operation. Drivers are tested at the terminal — not routed to a clinic across Laredo.
Union Pacific's Laredo operation involves crossing into Mexico. Are locomotive crews subject to FRA testing on the Mexican side of the bridge?
FRA jurisdiction and FRA 49 CFR Part 219 apply to covered employees while they are performing covered service on U.S. rail infrastructure. Once an employee crosses into Mexico, they are outside FRA jurisdiction. However, employees must be in compliance before beginning covered service on the U.S. side of the bridge. Program design and compliance obligations remain your responsibility — we coordinate the collections at UP's Laredo facility on the U.S. side.
Can you serve drayage carriers at both the World Trade Bridge and the Colombia Solidarity Bridge in the same visit?
Yes. We can coordinate a service visit that covers multiple employer facilities within the Laredo area, including carriers operating from both bridge corridors. Each employer's collection is managed separately with their DER. Contact us at (219) 315-0345 to discuss the logistics for a multi-facility visit.
Core programs: Mobile & on-site drug testing, DOT drug testing, Non-DOT drug testing, Post-accident testing, Reasonable suspicion testing, Random testing programs, Breath alcohol testing. Planning: how it works, instant quote calculator, all locations. Industries: employer industries we support. Long-form answers: Employer drug testing FAQ. Quick questions: Contact us.
For how we think about regions and feasibility, see service areas.
Nationally coordinated collection support
OnSite Employer Testing is headquartered in Illinois and coordinates mobile and on-site employer testing across selected regions and employer locations—including through partner collectors when your program, timing, and geography allow. Availability depends on location, timing, test type, site access, collector availability, and scheduling needs.
Scope collections for your Laredo-area operation
Share your facility address, expected donor count, test reason, and DOT or non-DOT status — we confirm what is workable and send a written proposal.