Random drug tests at work: the probability of identifying frequent and infrequent users of illicit drugs.

摘要: Random drug testing in the workplace has become more common since federal guidelines were issued 1988, despite criticism that most positive tests are result of occasional use illicit drugs. In order to determine relative probabilities detecting frequent versus infrequent users drugs, a survey 15 experts abuse field was conducted. Based on responses, it estimated 55% employed people who used any drugs prior year annual users, 37% monthly and 8% daily users. Analysis using probability theory indicated among test positive, 52% will be 41% only 7% At 50% rate, random identify 40% 1% during course year. The rate employees is approximately eight times average rate. effective identifying near but they less at Employers have found deterrent both