Workplace Drug and Alcohol Testing – FAQs
Frequently asked questions
We hope to answer any questions you may have here, but if not please get in touch on 0140 29466 and you can speak to one of our dedicated workplace testing experts.
Is drug and alcohol testing an invasion of privacy?
How confidential is the testing?
What is chain of custody?
What drugs are tested for?
A standard workplace panel will include:
What makes a test positive?
What are cut-off levels?
Is drug testing reliable?
What happens when the employee is tested?
Will the employee be required to give a urine sample in the presence of a collector?
What if an employee declines to be tested?
What facilities should be provided for collecting urine samples?
What if an employee is unable to give a urine sample?
Is introducing workplace drug and alcohol testing expensive?
How long can a drug be detected in urine?
How long can a drug be detected in oral fluid?
Is there any preparation for the test?
Can an employee challenge the results?
Yes, an employee has the right to challenge a positive result and ask for a retest. This will be performed on the secondary portion of the original sample, which the laboratory still holds.
Depending on the company policy, the employee may have to cover the cost of the retest.
What time period does hair testing cover?
A standard window of detection for head hair is 90 days. However, longer and shorter timeframes are possible. Body hair samples show an approximate 12-month timeframe.
How soon after use can a drug be detected in hair?
It takes approximately 7–10 days from the time of drug use for the affected hair to grow above the scalp.
Body hair growth rates are generally slower and cannot be used to determine a specific timeframe of drug use.