DOT-COMPLIANT · ON-SITE EMPLOYER DRUG TESTING
Mobile Drug & Alcohol Testing in Los Angeles, California
On-site DOT and non-DOT collections at your Port of LA drayage terminal, SoCalGas pipeline facility, LAX cargo ramp, or Chevron El Segundo refinery gate — we come to your crew.
On-site DOT and non-DOT collections at your Port of LA drayage terminal, SoCalGas pipeline facility, LAX cargo ramp, or Chevron El Segundo refinery gate — we come to your crew. Los Angeles anchors maritime port & drayage (fmcsa), pipeline & petrochemical (phmsa), aviation (faa) employer demand — including Port of Los Angeles; SoCalGas; Chevron El Segundo Refinery; LAX Air Cargo, and related operators across California. For safety-sensitive CDL drivers, pipeline workers, railroad crews, and aviation employees who cannot leave a shift for a clinic visit, mobile collection keeps operations staffed while meeting federal custody requirements.
OnSite Employer Testing coordinates mobile drug testing collections at your Los Angeles-area facility, yard, terminal, or job site. We do not operate a clinic. Review how it works or browse all locations we serve across the region.
Why Los Angeles Employers Need Mobile Testing
On-site mobile collections at port terminals, gate queues, and drayage yards — no clinic detour for CDL drivers
Refinery and pipeline facility badge-day testing — SoCalGas, Chevron, Tesoro-approved collection protocols
program design and compliance obligations remain your responsibility under applicable law — we coordinate the collections
Industries We Serve in Los Angeles
Port of Los Angeles
Port of Los Angeles — San Pedro terminal drayage carriers (FMCSA-regulated or employer-directed programs where applicable). We coordinate on-site collections for pre-employment, random, post-accident, and reasonable suspicion events at employer facilities throughout the Los Angeles market.
SoCalGas
SoCalGas — largest US natural gas distribution utility PHMSA (PHMSA-regulated or employer-directed programs where applicable). We coordinate on-site collections for pre-employment, random, post-accident, and reasonable suspicion events at employer facilities throughout the Los Angeles market.
Chevron El Segundo Refinery
Chevron El Segundo Refinery — PHMSA pipeline & refinery workers (PHMSA-regulated or employer-directed programs where applicable). We coordinate on-site collections for pre-employment, random, post-accident, and reasonable suspicion events at employer facilities throughout the Los Angeles market.
LAX Air Cargo
LAX Air Cargo — American/United/Atlas Air FAA safety-sensitive (FAA-regulated or employer-directed programs where applicable). We coordinate on-site collections for pre-employment, random, post-accident, and reasonable suspicion events at employer facilities throughout the Los Angeles market.
BNSF Hobart Intermodal Facility
BNSF Hobart Intermodal Facility — FRA maintenance-of-way (FRA-regulated or employer-directed programs where applicable). We coordinate on-site collections for pre-employment, random, post-accident, and reasonable suspicion events at employer facilities throughout the Los Angeles market.
Union Pacific LATC Intermodal Terminal
Union Pacific LATC Intermodal Terminal — FRA covered service (FRA-regulated or employer-directed programs where applicable). We coordinate on-site collections for pre-employment, random, post-accident, and reasonable suspicion events at employer facilities throughout the Los Angeles market.
Caltrans District 7
Caltrans District 7 — contractor fleets I-405/I-710 corridor (FMCSA-regulated or employer-directed programs where applicable). We coordinate on-site collections for pre-employment, random, post-accident, and reasonable suspicion events at employer facilities throughout the Los Angeles market.
Applicable Regulations
Employers in Los Angeles commonly coordinate testing under:
- 49 CFR Part 40 — DOT collection and lab procedures
- 49 CFR Part 382 — FMCSA CDL drayage & trucking carriers
- 49 CFR Part 199 — PHMSA pipeline operators (SoCalGas, Chevron pipelines)
- 14 CFR Part 120 — FAA aviation safety-sensitive employees
- 49 CFR Part 219 — FRA railroad covered service
- California Labor Code §§ 1025–1028 — employer drug-free workplace programs
- California AB 2188 — cannabis employment protections (pre-employment testing still permitted for safety-sensitive roles)
Testing Services Available in Los Angeles
We coordinate the following collections for Los Angeles-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
On-Site Collections in Los Angeles
LAX air cargo ramp and ground handling employer collections coordinated with FAA-mandated random pools
24/7 post-accident and reasonable-suspicion response anywhere in the LA Basin
California-specific chain-of-custody documentation for state compliance requirements
Use our instant quote calculator to scope your collection or visit our service areas page for broader coverage context.
Questions from employers in this region
Can you test at the Port of Los Angeles without disrupting terminal operations?
Yes. We coordinate directly with your terminal or drayage yard supervisor to stage collections at the gate, driver lounge, or a designated area — minimizing truck turn time while meeting FMCSA Part 382 chain-of-custody requirements.
Does California AB 2188 affect DOT-mandated drug testing for CDL drivers?
Federal DOT regulations (49 CFR Part 40) preempt California's AB 2188 cannabis employment protections for safety-sensitive DOT-covered positions. CDL drivers, pipeline workers, and FAA safety-sensitive employees remain subject to full federal drug testing panels.
How fast can you mobilize for a post-accident test at a refinery in the LA Basin?
We target on-site arrival within 2 hours for post-accident or reasonable-suspicion collections anywhere in the Los Angeles Basin — from San Pedro to the San Fernando Valley. Call (219) 315-0345 for immediate dispatch.
Do you handle random pool administration for large Los Angeles fleets?
We coordinate random selections, scheduling notifications, and on-site collections for large CDL and aviation employer pools throughout Los Angeles County. Contact us to discuss your fleet size and randomization schedule.
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 Los Angeles-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.