Employers or organizations may use a few types of drug testing to check for drug use in individuals. The most common types include urine, hair, saliva, and blood tests. Urine tests are the most frequently used type of drug test as they are cost-effective and can detect a wide range of drugs. Hair tests are more expensive but can detect drug use over a longer period. Saliva tests are less invasive and can detect drug use within the past few days, while blood tests are the most accurate and can detect drug use within the past few hours. It’s important to note that the type of drug test used may vary depending on the organization’s needs and the position being filled.