Drug Screening is cheap and fast but not particularly accurate.
Parole boards and some companies hiring low paid employees are the primary users of on-site drug screening.
These types of drug screening tests are the cheapest way to go for some situations but not what most companies use that need to have a valid and legitimate drug screening program.
A “drug test” is used by most major corporations. If the applicant’s sample passes the drug screen, the individual’s sample is given a passing status.
If the sample does not pass the drug screen, it then moves to the “drug test” or confirmation process.