Federal Testing Programs Done Right
Premier Diagnostic Solutions provides fully compliant DOT drug and alcohol testing for transportation employers under FMCSA, FAA, FTA, PHMSA, and FRA regulations.
DOT-Regulated Industries We Serve
Trucking & Commercial Drivers
CDL drivers, owner-operators, and motor carriers subject to 49 CFR Part 382 random, pre-employment, post-accident, and return-to-duty testing.
Aviation
Flight crew, air traffic controllers, and safety-sensitive aviation employees under 14 CFR Part 120.
Mass Transit
Bus, rail, and ferry operators covered under 49 CFR Part 655 with full program management available.
Pipeline & Hazmat
Pipeline operators and hazardous materials employees under 49 CFR Part 199 and Part 382.
Railroad
Railroad employees in safety-sensitive positions under 49 CFR Part 219 post-accident and random programs.
Maritime
Merchant mariners and vessel crew members subject to 46 CFR Part 16 drug testing requirements.
DOT-Required Test Types
Pre-Employment
Required before a safety-sensitive employee performs any DOT-regulated function for the first time.
Random Testing
Unannounced, scientifically random selection from your DOT-regulated employee pool. We manage your consortium enrollment and draw scheduling.
Post-Accident
Mandatory testing following qualifying accidents. We provide rapid response collection — same day when needed.
Reasonable Suspicion
Supervisor-initiated testing with proper documentation. We guide your supervisors through the process and handle chain of custody.
Return-to-Duty
Required before an employee resumes safety-sensitive duties after a violation. Includes SAP referral coordination.
Follow-Up Testing
Unannounced follow-up tests as directed by the Substance Abuse Professional (SAP) — minimum 6 tests in 12 months.
What DOT Tests Screen For
DOT 5-Panel Drug Test
Urine specimen — SAMHSA-certified lab
- Marijuana (THC)
- Cocaine
- Amphetamines (including methamphetamine)
- Opioids (codeine, morphine, heroin, oxycodone, oxymorphone, hydrocodone, hydromorphone)
- Phencyclidine (PCP)
DOT Alcohol Testing
Evidential Breath Testing (EBT) device
0.02–0.039 BAC
Removed from safety-sensitive duty for minimum 8 hours
0.04+ BAC
Violation — SAP referral and return-to-duty process required
DOT alcohol testing uses an Evidential Breath Testing (EBT) device operated by a trained Breath Alcohol Technician (BAT).
Full-Service DOT Compliance
Consortium / C/TPA Enrollment
We enroll your drivers in a DOT-compliant random testing consortium and manage all draws, notifications, and documentation.
MRO Services
All positive results are reviewed by a certified Medical Review Officer (MRO) before being reported to the employer.
Supervisor Training
DOT-required reasonable suspicion training for supervisors — available in-person or online.
Chain of Custody
Federal Custody and Control Forms (CCF) for every specimen. Audit-ready documentation maintained for the required 5-year period.
SAP Referral Network
We connect employees who test positive with qualified Substance Abuse Professionals for evaluation and treatment planning.
Program Recordkeeping
We maintain all required records — test results, refusals, training certificates — so you're always audit-ready.
Set Up Your DOT Testing Program Today
Whether you're a single owner-operator or managing a fleet of hundreds, we build a compliant program around your operation.