Drug testing for marijuana

Marijuana drug testingThe Quest Diagnostics Drug Testing Index™ and other reputable research sources have long shown marijuana is the most commonly used illicit drug. Marijuana is the product of the hemp plant, cannabis sativa, containing the psychoactive chemical delta-9-tetrahydrocannabinol (THC) and other related compounds. Under federal law, it is classified as a Schedule I drug, a category for substances or chemicals with no currently accepted medical use and a high potential for abuse. 
Marijuana is typically smoked using cigarettes or pipes but can also be mixed into edibles and drinks or extracted for potent oils and waxes. Effects can include distorted senses, impaired judgment, lack of balance and coordination, increased appetite, elevated heart rate and sometimes anxiety and panic. Today’s THC concentrations average close to 15 percent compared to approximately 4 percent in the 1980s.1 
Drug use costs the U.S. economy billions of dollars annually. According to the 1997 report by the Department of Labor, 73 percent of all current drug users aged 18 and older were employed. This calculates to 6.7 million full-time workers and 1.6 million part-time workers.2  Drug use among employees can lead to lower productivity, increased workplace accidents and injuries, increased absenteeism and lower morale.
Companies can screen applicants and employees to deter drug use and keep their workplaces drug-free. Data shows that oral fluid testing using the Oral-Eze® oral fluid collection system is very effective in detecting recent drug use, particularly marijuana. According to the most recent DTI analysis, there was a 25 percent relative increase in marijuana detection in 2015 as compared to 2014 (7.5 percent versus 6.0 percent).3
View our Marijuana Legislation by State infographic.
Download our reference guide for Common Drugs of Abuse.
To get started with Quest today, call 1.800.877.7484 or contact us online.

1  National Institute on Drug Abuse: Marijuana. www.drugabuse.gov/drugs-abuse-marijuana

2  "10 Facts about Marijuana." Institute for a Drug-Free Workplace. www.drugfreeworkplace.org/10-facts-about-marijuana/

3  "Drug Positivity in U.S. rises to highest level in a Decade." Quest Diagnostics. www.questdiagnostics.com/dti