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Drug & Alcohol Testing

Reasonable Suspicion Testing

Properly documented reasonable suspicion testing protects both safety and legal defensibility. Same-day testing with real-time supervisor coaching and complete documentation support.

Reasonable suspicion testing requires careful documentation—improperly documented observations can lead to legal challenges and reinstatement of terminated employees. Supervisors without proper training or real-time support may make mistakes that expose employers to liability.

DSC provides immediate reasonable suspicion support through our hotline: real-time supervisor coaching on observation criteria and documentation, same-day test scheduling and collector dispatch, prebuilt documentation forms and refusal templates, and complete chain-of-custody management. When a supervisor suspects impairment, DSC ensures testing happens same-day with proper documentation. Testing is $85 for mobile collection plus emergency dispatch fees when applicable.

Key Features

Supervisor Coaching In Real Time

Compliance advisors walk supervisors through the observation criteria and documentation while events unfold.

Documentation & Chain Control

Prebuilt forms, refusal templates, and custody instructions keep every step properly documented.

3,000+ Locations + Mobile Dispatch

Nationwide network ensures directly observed collections are initiated within hours, day or night.

Compliance Requirements

Compliance Requirement

49 CFR §382.307 requires reasonable suspicion testing when a trained supervisor observes behavior, appearance, speech, or body odors consistent with drug or alcohol use. Testing must occur as soon as practicable. Alcohol testing must be conducted within 8 hours of the observation, or documentation must explain why testing was not performed. Drug testing should occur as soon as possible but must be within 32 hours.

How Diversified Helps

  • 24/7 hotline for immediate DER support
  • Same-day test scheduling and collector dispatch
  • Supervisor observation documentation guidance
  • Trained supervisor checklist and compliance support
  • Chain of custody and result tracking
  • Legal documentation for personnel actions

Frequently Asked Questions

Reasonable suspicion is based on specific, observable signs such as behavior (aggression, withdrawal), appearance (bloodshot eyes, unsteady gait), speech (slurred words), or body odors consistent with substance use. The observation must be made by a supervisor trained in detecting these signs.

Yes. 49 CFR §382.603 requires supervisors to complete at least 60 minutes of training on alcohol misuse signs and 60 minutes on controlled substance use signs before they can make reasonable suspicion determinations. DSC provides this required training.

A refusal to test is treated the same as a positive test result. The driver must be immediately removed from safety-sensitive duties and reported to the FMCSA Clearinghouse. DSC documents the refusal and guides you through the required reporting and removal process.

Testing must occur "as soon as practicable." For alcohol, you have 8 hours (or must document why not). For drugs, you have 32 hours (or must document why not). DSC's 24/7 emergency response ensures testing occurs within required timelines.

Get Started

Protect safety and defensibility with properly documented reasonable suspicion testing and real-time supervisor support.

Contact our testing specialists to learn how we can support your drug and alcohol testing program.

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