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CRJU 4110 Study Guide - Quiz Guide: Gas Chromatography, General Idea, Pain Management

Criminal Justice
Course Code
CRJU 4110
Study Guide

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Drug Chemistry (12):
Define controlled substance:
A controlled substance is a drug or chemical whose manufacture, possession, or use is
regulated by the government.
Presumptive tests:
They are usually used to tell if a substance might be a controlled substance. If positive,
they lead to a confirmatory test. Examples of this are screening and color tests such as the drug-
test kits police officers have. Others include Duquenois-Levine (marijuana), KN Reagent for
bath salts, and the Marquis for opiates.
Schedules as refers to abuse potential and medical use (not the drugs that fall within the
Types of confirmatory tests for drug chemistry:
Gas chromatography is considered the gold standard. Thin-layer chromatography is also
held in high regard within the field.
Presumptive vs. confirmatory:
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The difference between confirmatory and presumptive testing can be hinted in the name.
The former is used to get a general idea of what it is and whether or not it is worth investigating
further, while the latter is a more conclusive ad detailed test that tells is exactly what a substance
Screening and confirmation tests (may want to refer to book):
Screening tests are used to narrow the amount of possible drugs the substance could be
from over a thousand to a more manageable and testable number. A confirmation test is a single
test that definitively identifies a substance.
Marijuana examination- cystalythic hairs and covering hairs:
Color tests- what are they, what used for (generally, not each specific test):
Color tests are when an investigator or a chemist exposes a substance to a chemical to see
if it will show a certain color known as being that substance. They are used as presumptive or
screening tests to narrow down what they could be.
This is a technique of separating the components of a mixture to understand what goes
into the making of that substance and ensure that it is, in fact, a controlled substance
Spectrophotometry is a technique that examines the quantity of radiation that a particular
substance absorbs as a method of identifying that substance.
Toxicology (13):
Role of a toxicologist:
Toxicologists can vary from a wide range of positions. Many are involved in post-
mortem investigations, are used in analytical situations involving health care, esoteric or pain
management, and forensic.
Forensic toxicology- definition, what it involves:
Forensic toxicology is the examination of any substances within the human body in
relation to criminal law. The forensic aspect is only involved in criminal law, but can vary
widely in the type of case from drugs to alcohol.
Matrices (discussed by instructor on handout):
The matrices examined by forensic toxicologists include blood, urine, oral fluid, and even
Pharmacokinetics stages:
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