Drug and alcohol testing is essential for workplaces where safety, compliance, judgement and clear decision-making matter, especially in industries where impairment can put workers, contractors, customers or the public at risk. This includes construction, mining, transport, logistics, manufacturing, warehousing, aviation, rail, healthcare, utilities, civil works and other safety-sensitive environments.
Regular drug and alcohol testing is commonly required in industries where impairment could create serious safety risks to workers, the public, infrastructure, vehicles, machinery, or critical operations.
Drug and alcohol testing is commonly linked to:
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WHS obligations
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Chain of Responsibility (CoR)
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Rail safety regulations
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Mining regulations
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Aviation and maritime safety
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Fatigue management
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Contractor compliance
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Site access requirements
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Insurance and risk management programs
In Australia, Drug and Alcohol Testing is common for:
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Pre-employment testing
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Random testing
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Blanket/site-entry testing
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Post-incident testing
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Reasonable suspicion testing
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Return-to-work testing
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Follow-up testing
Fit Test Victoria provides professional workplace drug and alcohol testing across Melbourne, Geelong, throughout Victoria and Australia-wide, helping businesses manage risk, support workplace health and safety obligations, and maintain a safer, more accountable workforce. Regular alcohol and drug testing can help identify potential impairment before it contributes to accidents, injuries, near misses, equipment damage, public safety or harm to a business's reputation.
Whether testing is required for pre-employment screening, random workplace programs, post-incident investigations, return-to-work checks or contractor compliance, drug and alcohol testing gives employers a practical way to protect their people, meet site requirements and promote a safer working culture.
The three common testing methods are oral fluid/saliva testing, urine testing, and breath alcohol testing. Australian workplace drug testing is commonly aligned with AS/NZS 4760:2019 for oral fluid and AS/NZS 4308:2023 for urine testing. Breath alcohol testing is normally performed with a calibrated breathalyser.
A workplace drug and alcohol test is usually conducted as a simple screening process to check whether a worker may be affected by alcohol or drugs while at work.
For alcohol testing, the worker blows into a calibrated breathalyser. The device gives an immediate reading, usually showing whether alcohol is present and whether the result is above the workplace’s permitted limit. If a positive reading is detected, a second confirmation breath test may be performed after a short waiting period.
For drug testing, the worker usually provides either an oral fluid/saliva sample or a urine sample, depending on the workplace policy.
With saliva testing, a collection swab is placed in the worker’s mouth until enough oral fluid is collected. The sample is then tested on-site using a screening device. Saliva testing is commonly used because it is quick, non-invasive, and generally better suited to detecting more recent drug use.
With urine testing, the worker provides a urine sample into a collection container. The sample is labelled, sealed, and handled under chain-of-custody procedures to help protect the integrity of the result.
If the on-site drug screen is negative, the result is recorded and the worker can usually return to work. If the result is non-negative, it is not treated as a final confirmed positive straight away. The sample is typically sent to a laboratory for confirmatory testing.