The rehabilitation of persons addicted to controlled substances and the prevention of continued addiction to controlled substances is a matter of statewide concern. It is the policy of the state to encourage each county and city and county to make use, whenever applicable, of testing procedures to determine addiction to controlled substances or the absence thereof, and to foster research in means of detecting the existence of addiction to controlled substances and in medical methods and procedures for that purpose.
Ca. Health and Saf. Code § 11554