Significant concerns and litigation arise from questions of employee privacy rights and potential violations of such privacy in drug tests. The United States Supreme Court recognized that submitting a sample from your body, whether blood, urine, saliva, or otherwise is considered an intrusion on privacy interests. However, this interest is often justified in light of the employer’s (and the government’s, in certain mandated testing programs) own interests in maintaining a healthy and safe work environment. Urine tests remain controversial when directly observed, meaning that the collector watches firsthand the employee providing the sample from his or her body. For urine, this means that the collector must be the same gender because the donor, the employee tested, must expose genitalia for this to be accomplished. However, with oral fluid, the collector is able to observe the entire collection and never go further than inspecting the inside of the donor’s mouth, significantly reducing the risk of a privacy violation.