Drug and alcohol screening are necessary to certain processes in the modern world, but they do not come without some controversy. It is possible to abuse the drug and alcohol screening process when it is gone about unethically. Every measure of authority that can be taken can be abused, and drug and alcohol testing are no exception. If a person is stereotyped as someone who should submit to a screening, subjected to a screening in a disrespectful way or forced into a screening in any instance when it is not actually called for, this is an unethical practice. Several examples of this are as follows:

• Invasion of privacy. It is argued by critics of drug and alcohol screening that the procedure is invasive. This could mean the nature of the procedure or how liberally it is being exercised. Drug and alcohol screening are capable of revealing very personal information about a person, not all of which is actually valuable for assessing their eligibility to do something or go somewhere. It is inarguable that drug and alcohol screening are an absolute necessity at times, but this does not mean they should be ordered capriciously. There should always be a firm, legitimate reason for the screening of any individual for drugs or alcohol.
• Profiling. A matter that has landed authorities in the hot seat repeatedly is the problem of profiling when it comes to drug and alcohol screening. Many studies have revealed the biases of authority figures based on who they select for drug and alcohol screenings. Some reveal a bias toward a particular ethnicity, personality type, gender or other demographic. Calling a drug or alcohol screening random when it is actually based on profiling is a clear violation of screening ethics.
• Unethical use of power. It is also possible for authority figures to exert unnecessary power in their drug and alcohol screenings for the purpose of intimidation or some other personal agenda. Drug and alcohol screenings should only be used to protect the safety and well being of everyone who could be affected by a misuse of drugs or alcohol.