A urine drug screen, also known as, a urine drug test is a quick and painless procedure used to detect the presence of certain illegal drugs and prescription medications in the urine. The urine drug screen is the most common screening method that usually screens for alcohol, amphetamines, benzodiazepines, marijuana, cocaine, PCP, and opioids (narcotics).
When is Urine Drug Screening used? 
- Urine testing is suitable for all testing reasons – from pre-employment to random to post-accident – and can be performed for a wide range of illicit and prescription drugs. It’s primary purpose is to filter drug users from the workplace as well as to deter drug use on the job.
- Many employers require potential employees to get a urine drug test before they can be hired so that they’ll be able to track and keep people with drug problems out of their jobs that require the ability to be alert and focused.
A drug-addicted air traffic controller or truck driver, for instance, could put the safety of many people at risk.
- Furthermore, your GP might advise you for a urine drug test if they suspect you to have alcohol, drug related problems or if you look confused and your behavior seems strange or dangerous.
- Lastly, the test can be used in home settings. Parents may ask teenagers to take this test to prove that they’re not using drugs or alcohol.
How effective is this test?
Although it is the most common drug testing method, urine testing is not foolproof.
Results of the screening are expressed in ng/mL (nanograms per milliliter). The test uses a cutoff point. Any result below the cutoff number is a negative screen and any number above the cutoff number is a positive screen. The people who administer the drug test usually give the results in terms of positive or negative instead of numeric values.
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