Download The Drug Recognition Expert (DRE)

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SFS1. STUDENTS WILL RECOGNIZE AND CLASSIFY VARIOUS
TYPES OF EVIDENCE IN RELATION TO THE DEFINITION AND
SCOPE OF FORENSIC SCIENCE.
b. Distinguish and categorize physical and trace evidence (e.g. ballistics,
drugs, fibers, fingerprints, glass, hair, metal, lip prints, soil, and toxins).
b. Analyze evidence that pertains to the manner of death
(natural, homicide, suicide, accidental, or undetermined).
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Toxicologists
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in the body
FORENSIC SCIENCE: An Introduction by Richard Saferstein
measurement of alcohol
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analysis of alcohol
Alcohol
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depressant
nervous system
brain
central
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time taken to consume
the drink
alcohol content
amount consumed
food present in
the stomach
rate
absorbed
Elimination
oxidation
excretion
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Oxidation
measuring the quantity of alcohol
present in the blood system
measuring the alcohol content in the
breath
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amount of
alcohol
exhaled in the
breath is in
direct
proportion to
the blood
concentration
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FORENSIC SCIENCE: An Introduction by Richard Saferstein
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absorbed from the
stomach and small intestines
into the blood stream
liver
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pumped to the
lungs
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carbon dioxide
and alcohol
oxygen enters
carbon dioxide and
alcohol
exhaled during
breathing
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Breath testers
FORENSIC SCIENCE: An Introduction by Richard Saferstein
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interaction of the light
with alcohol
measure
a blood alcohol
concentration
cells
fuel
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field sobriety tests
horizontal gaze nystagmus test
walk and turn
one-leg
stand
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Gas chromatography
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Blood
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se level
2003
0.08 percent per
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implied consent
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concentration levels found in powders
and pills
body is an active
chemistry laboratory
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assess
the toxicity of the drug or
poison
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detect isolate
organs
identify
extracted
biological fluids tissues
identify the drug
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Drug extraction
basic
screening
acidic
confirmation
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screening test
Positive results
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thin-layer
chromatography gas
chromatography
immunoassay
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Gas chromatography/mass
spectrometry
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GC separates the sample into its
components
MS represents a
unique “fingerprint” pattern
required to provide an opinion on
the drug’s effect on an individual’s
natural performance or physical
state
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Heavy metals
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