Employees with negative test results will not be contacted. A Medical Review Officer (MRO) will contact Employees who test positive from improper alcohol or drug use. The Employees will have an opportunity to explain to the MRO that the results where not due to the improper use of alcohol or illegal drugs. Employees, at their own cost, may select a third-party certified laboratory to analyze the split sample. The selection of a certified third party laboratory shall be made through the MRO. The Employee has 72 hours from the MRO notification (or from their supervisor if the MRO is unable to contact the Employee) to exercise this option, otherwise the confirmation test will be accomplished by the test vendor’s laboratory.History: Rule 07-98, eff. Feb. 9, 1999.