All clients are subject to urine drug screens while under the supervision of the Probation Department. It is expected that all clients will be randomly screened on a regular basis. The Probation Department conducts urine drug screens in accordance with industry standards and follows a very strict chain of custody. A Probation Department employee observes all screens. The urine specimens are tested by a certified laboratory, and the probationer is expected to pay for a portion of the costs of the testing. Specimens are screened for the presence of alcohol and various drugs.