The drug marijuana is derived from the leaves, stems and other parts of the hemp plant Cannabis sativa, contains delta-9-tetrahydrocannabinol, or THC, a psychoactive chemical which affects areas of the brain associated with pleasure, memory, thinking and coordinated movement. Although Federal law prohibits marijuana possession, distribution or use, 18 states and the District of Columbia now permit marijuana use for medicinal purposes and Colorado and Washington permit recreational use of marijuana among adults.Quest Diagnostics is a leader in prescription and workplace drug monitoring by diagnostic testing. The company's Drug Testing Index™ is widely considered a benchmark in national trends of drug use by American workers. The company extended its drug monitoring services with the addition of a new portfolio of prescription drug monitoring services for clinicians in 2010.
Recreational Marijuana Users More Likely To Misuse Prescription Drugs, According To National Study By Quest Diagnostics
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