All The Information About Drug testingThere are many companies that provides drug tests and alcohol testing services. These companies offer analysing services for amphetamines, marijuana, cocaine, opiates, PCP as well as alcohol and many other illegal controlled substances.
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Types of Drug Tests
The six primary types of drug testing are listed below:
1. Pre-Employment Drug Tests are drug screens which are done as a condition for hiring. An applicant must pass drug screen before they officially become an employee. Sometimes these tests are done prior to offer. Other times they are done shortly after they begin working.