Employers may conduct drug test their employees or job applicants as a condition of employment or for random testing. The most common types of drug tests include urine, blood, saliva, and hair tests. Employers may test for illegal drugs, prescription drugs, or both. The specific drugs that are tested for may vary depending on the employer’s policies and the type of job. In the United States, there are federal guidelines for drug testing in certain industries, such as transportation and federal employment, but state laws can also apply.
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