with the results? How effective is random drug tests in the workplace? I need to

What must an employer do when a drug test returns positive and the employee disagrees with the results? How effective is random drug tests in the workplace? I need to have at least 250 words.  I need to have this question answered by Thursday, June 20, 2013 by 1:00 p.m. EST.  If you have any questions, please let me know. Purchase the answer to view it