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If you are going for a job with a big organization you may be required to take a drug test. Drugs tests are the most effective way to detect various types of drugs that may be in the body. Not only do companies and organizations require drug tests, but educational institutions such as colleges and universities also require them. Drug screenings are also conducted where people are given tests that point out who uses drugs.

Some people will use masking chemicals prior to drug testing to cover up that they use drugs. They will also attempt to use synthetic urine to pass drug tests. Many employers do not solely depend on routine procedures. There are plenty of drug tests that will ensure correct results such as hair testing, saliva testing, hair alcohol testing and urine testing.

Hair testing can be more accurate than saliva, sweat or urine tests. Hair follicle tests can be more expensive than drug tests however the test results are more accurate. Hair follicle testing is the most sensitive testing to detect drug use.
Many companies still rely on drug tests as the best method in deterring drug use. Companies especially corporations have monthly random drug tests. No prior notice is given that drug tests are being conducted so there is no time to take masking chemicals or to get synthetic urine for the test. This is the reason for random drug tests so that no employee can “prepare” for test. This method is especially used in companies that have employees driving company vehicles or other equipment.