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24/7 Post-Accident & Reasonable Suspicion Testing


As a provider of workplace safety and compliance services with more than 30 years of experience, DISA helps thousands of companies across the globe make more informed staffing decisions by offering a broad array of industry-leading screening and compliance services.

Each of our services, including 24/7 Post Accident & Reasonable Suspicion Testing, delivers an elevated standard of results because we believe in going beyond what is required to ensure what is fundamentally necessary for our clients, employee dependability, safety, and well-being. For after-hours testing, DISA is available 24/7 for collection site management needs.


According to the National Drug-Free Workplace Alliance (NDWA), more than 74 percent of all current illegal drug users are employed, and up to 40 percent of industrial fatalities in the U.S. can be linked to drug abuse and alcoholism.

Testing following an accident is important as it can help determine whether drugs and/or alcohol were a factor, especially when property damage or personal injuries can result from an accident.

  • Post-Accident Drug Testing - Typically occurs after an employee has been involved in an on-the-job accident that may have caused a fatality, serious injury, or significant property damage to determine whether drug or alcohol use was a factor.
  • Reasonable Suspicion Testing -Also known as for-cause or probable cause testing, reasonable suspicion testing is performed when there is evidence or reasonable cause to suspect an employee of drug use. Such evidence is based on direct observation, either by a supervisor or another employee. Reasons to conduct a reasonable suspicion test include:
    • Physical signs - Bloodshot eyes/dilated pupils, slurred speech, unsteady walk, shakes or tremors, unexplained sweating or shivering, fidgeting/inability to sit still, sleeping at work, or difficulty staying awake
    • Behavioral signs - Attendance problems/tardiness, a pattern of absences or excessive absenteeism, a decline in performance/productivity, acting withdrawn from others
    • Psychological signs - Unexplained changes in personality or attitude, sudden mood changes, angry outbursts or inappropriate laughing, inability to focus or concentrate