The General Assembly finds that individuals should be protected from unreliable and inadequate examinations and screening for controlled substances. The General Assembly also finds that employers who test employees for controlled substances shall use reliable and minimally invasive examinations and screenings and be afforded the opportunity to select from a range of cost-effective and advanced drug testing technologies. The purpose of this Article is to establish procedural and other requirements for the administration of controlled substance examinations. (1991, c. 687, s. 1; 2001-487, s. 66(a).)