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Drug & Alcohol Testing

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According to the National council on Alcohol and Drug Dependence, over 70% of people with addiction problems are employed. Manual labour jobs that have long hours can make addiction problems worse and leave you and your co-workers in danger. Not only does the likelihood of workplace accidents greatly increase when employees are under the influence, but the chances of aggravated assault and sexual harassment increase as well. On the less serious side, addictions can also cause withdrawal symptoms on the job, inability to focus and a greater chance of risk-taking behavior. This is why Drug and Alcohol (D&A) testing is a key part to creating a safe workplace for employees.

Our collectors are certified through the Drug & Alcohol Testing Association of Canada (DATAC).


Like alcohol, marijuana use can be tested for in the workplace. It is especially important if there is reasonable suspicion of use during or before shifts. Marijuana can still be prohibited in the workplace, even though it is a legal substance in some areas. Most D&A tests do test for marijuana in the workplace. Testing positive can prevent an applicant from getting a job or cause a current employee to be terminated.

Marijuana Drug and Alcohol Testing


Prescription drugs vary greatly in their effect on a person. Because of this, certain drugs have a higher chance of abuse and are tested for in various D&A screenings. Commonly tested prescription drugs include: Amphetamines, barbiturates, benzodiazepines and opiates (such as codeine, morphine, hydromorphone, hydrocodone, oxymorphone and oxycodone). Because these prescription drugs are highly addictive and inebriating, use during work hours in an industrial setting can have devastating consequences. Although prescribed by a doctor, the side effects of these drugs can cause sedation, dizziness, drowsiness, poor coordination, and reduced breathing ability. These side effects can cause serious problems in the workplace - this is why the use of these drugs is often prohibited. 

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HEALTH urine test 306x378

Urinalysis provides results instantly and can be performed in remote areas. This test uses urine to detect drugs in the body. It does not give concentrations (only a pass/fail) and will require further lab testing to verify positive results.


  • Instant results
  • Cost effective in comparison to laboratory screening
  • Can be used in remote areas where shipping specimens to a laboratory may be difficult


  • Potential for adulteration or substitution
  • Certain types of POCT devices can be costly
  • Positive results require laboratory confirmation

Oral Fluid

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A mouth swab test that can detect recently used drugs is superior to a urine test. This test is difficult to tamper with or cheat on. Oral tests have a shorter drug detection window and a smaller fluid sample size.


  • Detection times of recently used drugs are significantly improved
  • Minimizes the chance of adulteration or substitution
  • Reduced donor embarrassment


  • Narrower drug detection window 
  • Less fluid sample size

Book a Drug & Alcohol Test or Awareness Workshop Today

Contact IRWIN'S Safety for a Drug and Alcohol Awareness Workshop or Testing. 


At IRWIN’S we strive to protect your people, property and business. Drug and alcohol testing can help mitigate workplace injuries and property damage while establishing a culture of safety in your organization. Our certified specimen collectors can perform a variety of drug and alcohol testing services that will meet your organization's needs.

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