If drug testing is done for probable cause, it needs to be based on performance-related behaviors and not just the substance use itself.

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Drug testing for probable cause should be based on performance-related behaviors that indicate possible substance use, such as erratic behavior, impaired judgment, or a decline in job performance. Simply testing for the presence of drugs or alcohol in the system is not sufficient, as it does not necessarily indicate a performance problem.

If Drug Testing Is Done for Probable Cause, It Needs