How to tell if drug use is happening onsite: Signs, surfaces to test, and the fastest way to confirm residue

How to tell if drug use is happening on site

Drug use on worksites can create safety hazards, reduce operational efficiency, and increase risk — even before anyone notices it. Environmental signs, surface residue, and subtle behavioural cues often appear long before incidents occur.

The key? Detect early, act proactively, and keep your workplace safe — research shows that effective workplace drug testing can significantly reduce accidents and injuries.

Behavioural and environmental indicators of drug presence

While behaviours alone don’t confirm drug use, they can guide where to look:

Potential behavioural indicators

  • Sudden mood changes or unusual energy levels
  • Impaired coordination or reaction times
  • Unexplained absences or extended breaks

Environmental signs

  • Traces of powders or sticky residues on benches, dashboards, or machinery
  • Chemical or sweet odours in breakrooms or bathrooms
  • Smudges, fingerprints, or burn marks in shared areas

Even subtle impairment can create safety hazards, reduce operational efficiency, and increase risk — affecting coworkers and overall productivity.

High-risk surfaces and locations to monitor

Targeted surface testing is far more efficient than random checks. Focus on areas where residues are most likely to appear:

Vehicles and machinery

  • Steering wheels, dashboards, cup holders, gear shifters

Staff amenities

  • Bathroom counters, mirrors, locker room benches

Shared equipment

  • Tools, workstations, tables, keyboards

Low-visibility areas

  • Loading docks, stairwells, warehouse corners

Monitoring these hotspots helps detect contamination early.

Fast, accurate confirmation of drug residues

Surface testing

  • Provides immediate, visual feedback
  • Non-invasive, no confrontation needed
  • Ideal for proactive safety checks

Dual-mode testing: DrugSense OraScan V5

  • Works as both a surface drug test and saliva drug test
  • Detects common substances in Australian workplaces
  • Simple, visual results for quick decision-making
DrugSense OraScan Saliva & Surface Drug Test Cassette V5

Optional: OraScan Drug Analyser

  • Digitally reads and logs results
  • Reduces interpretation errors
  • Supports safety audits and documentation

Together, these tools allow workplaces to monitor risks discreetly and consistently, focusing on prevention rather than punishment.

DrugSense OraScan Drug Analyser

Building a safer, more proactive workplace

  • Routine surface testing: Regular environmental checks prevent risks from going unnoticed.
  • Targeted saliva testing: Confirms if intervention or support measures are needed.
  • Education & awareness: Train staff to understand why testing is important for safety.
  • Design & monitoring: Reduce blind spots, improve ventilation, and maintain clear sightlines.

This approach is about prevention and safety, creating a culture where risks are identified and managed before they escalate.

Conclusion

Drug residues often appear long before they cause an incident. By combining environmental checks, surface testing, and rapid saliva confirmation, workplaces can stay one step ahead — protecting their people, their operations, and their reputation.

Contact Andatech below for free guidance on creating proactive workplace safety programs.