DOT-COMPLIANT · ON-SITE EMPLOYER DRUG TESTING
Mobile Drug & Alcohol Testing in Flint, Michigan
On-site DOT-compliant collections for GM Flint Assembly and GM Flint Engine Operations CDL JIT supplier carrier fleets, Bishop International Airport FAA pilot and crew employer programs, Norfolk Southern and CN FRA covered employees, and Consumers Energy PHMSA gas distribution field crews throughout Genesee County.
On-site DOT-compliant collections for GM Flint Assembly and GM Flint Engine Operations CDL JIT supplier carrier fleets, Bishop International Airport FAA pilot and crew employer programs, Norfolk Southern and CN FRA covered employees, and Consumers Energy PHMSA gas distribution field crews throughout Genesee County. Flint anchors automotive manufacturing supply chain (fmcsa), aviation — pilots & crew (faa), rail (fra) employer demand — including GM Flint Assembly; GM Flint Engine Operations; Bishop International Airport (FNT); Norfolk Southern Flint, and related operators across Michigan. For safety-sensitive CDL drivers, pipeline workers, railroad crews, defense contractors, 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 Flint-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 Flint Employers Need Mobile Testing
GM Flint Assembly and Engine Operations JIT CDL supplier fleet on-site pre-employment and random testing
Bishop International Airport FAA pilot, crew, and maintenance employer on-site collections
program design and compliance obligations remain your responsibility under applicable law — we coordinate the collections
Industries We Serve in Flint
GM Flint Assembly
GM Flint Assembly — Silverado/Sierra heavy-duty pickup CDL JIT supplier carrier fleet FMCSA (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 Flint market.
GM Flint Engine Operations
GM Flint Engine Operations — V8 engine CDL parts supply chain FMCSA (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 Flint market.
Bishop International Airport (FNT)
Bishop International Airport (FNT) — American Eagle/Delta FAA pilot and crew employer programs (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 Flint market.
Norfolk Southern Flint
Norfolk Southern Flint — FRA covered-service railroad employees (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 Flint market.
Canadian National (CN) Flint
Canadian National (CN) Flint — FRA covered railroad employees (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 Flint market.
Consumers Energy Genesee
Consumers Energy Genesee — PHMSA natural gas distribution Genesee County (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 Flint market.
Delphi Technologies / BorgWarner Flint
Delphi Technologies / BorgWarner Flint — auto parts CDL distribution FMCSA (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 Flint market.
MDOT Region 5
MDOT Region 5 — I-75/I-69/US-23 Genesee County construction CDL contractor fleets (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 Flint market.
Applicable Regulations
Employers in Flint commonly coordinate testing under:
- 49 CFR Part 40 — DOT collection and laboratory procedures
- 14 CFR Part 120 — FAA safety-sensitive FNT pilot, crew, and maintenance employer programs
- 49 CFR Part 382 — FMCSA CDL automotive supply chain and logistics carrier fleets
- 49 CFR Part 219 — FRA covered service Norfolk Southern and CN Flint
- 49 CFR Part 199 — PHMSA Consumers Energy Genesee County gas distribution operators
- Michigan Drug Testing Act (MCL 333.27961 et seq.) — employer program framework
Testing Services Available in Flint
We coordinate the following collections for Flint-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 Flint
Norfolk Southern and CN Flint FRA covered-service random and post-incident collections
Consumers Energy PHMSA gas distribution field crew collections throughout Genesee County
Delphi/BorgWarner Flint auto parts CDL distribution fleet testing
MDOT I-75/I-69 Genesee County construction CDL contractor on-site testing
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
GM Flint Assembly makes heavy-duty Silverado and Sierra trucks — how critical is CDL testing for their JIT supplier network?
GM Flint Assembly operates on a just-in-time production schedule for heavy-duty pickups. CDL supplier carrier delays directly impact assembly line throughput. We provide on-site testing at Flint-area supplier staging yards and carrier terminals — clearing drivers before their first gate entry without disrupting the JIT delivery cadence.
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 Flint-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.