 A drug test is a process using some types of biological substances taken from an individual to determine using. It's a matter of much controversy; many have argued that it is an invasion of privacy, and the accuracy and effectiveness of some tests are also in question.
Drug tests include two main types.
The first type of testing include the donor giving an example of urine, hair, blood, or saliva oral fluid to doctor, an employer, or a medical testing center. After the conglomeration from the donor, the sample is sealed with a special seal and sent to a laboratory for analysis. The advantages of this type of test are exactness, legality and the ability to customize tests for a particular demographic group. However, this type has the disadvantages. It has a typically costs associated with the need for collection sites (urine, blood), and the receiving results up to 4 days.
The second type of drug test which you can do at your workplace, school, washroom, or at-home. This drug test does not need a laboratory. These types of tests provide the advantages of lower cost and availability of results within few minutes. Furthermore, if on-site tests, such as oral fluid-based or saliva tests are used, the problem of "beating the tests" (otherwise known as sample adulteration or substitution) can be virtually eliminated. On-site tests provide qualitative results, and when supplemented with laboratory-based confirmation tests, can be defended in a court of law.
This article will focus primarily on the first type of test, but will refer to the latter when appropriate.
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