DRE Study Guide 7: Session 24 - Drug
Combinations (Answered) 100%.
2025/2026.
What is Polydrug use?
Ingesting two or more drugs
Why do users partake in Polydrug use?
• To leaven or compensate for the side effects of the primary drug and make the experience more
enjoyable with drug synergy effects
• To supplement for primary drug when supply is low.
What is Polycategory use?
Ingesting drugs from two or more drug categories
Per the National Cannabis Prevention and Information Center (NCPIC), the most common type of
polydrug mix is ___________________ and _______________.
Marijuana and alcohol
True or False:
It is actually more common for a Drug Recognition Expert (DRE) to encounter polydrug users than
single drug users.
True
In the Los Angeles Field Study (1985), _________ of the suspects had two or more drugs in them.
72%
If we discount alcohol, _________________________ of the Field Study suspects had two or more
other
drugs in them.
Nearly half (45%)
The National DRE database indicates approximately ____________ of all DRE ‐reported cases
revealed two or more drug categories detected.
36%
Common Polydrug combinations
• Cocaine and Cannabis
• Cocaine and Heroin
• PCP and Cannabis
• Alcohol and practically anything else
Combinations (Answered) 100%.
2025/2026.
What is Polydrug use?
Ingesting two or more drugs
Why do users partake in Polydrug use?
• To leaven or compensate for the side effects of the primary drug and make the experience more
enjoyable with drug synergy effects
• To supplement for primary drug when supply is low.
What is Polycategory use?
Ingesting drugs from two or more drug categories
Per the National Cannabis Prevention and Information Center (NCPIC), the most common type of
polydrug mix is ___________________ and _______________.
Marijuana and alcohol
True or False:
It is actually more common for a Drug Recognition Expert (DRE) to encounter polydrug users than
single drug users.
True
In the Los Angeles Field Study (1985), _________ of the suspects had two or more drugs in them.
72%
If we discount alcohol, _________________________ of the Field Study suspects had two or more
other
drugs in them.
Nearly half (45%)
The National DRE database indicates approximately ____________ of all DRE ‐reported cases
revealed two or more drug categories detected.
36%
Common Polydrug combinations
• Cocaine and Cannabis
• Cocaine and Heroin
• PCP and Cannabis
• Alcohol and practically anything else
