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Controlled Substances:
Controlled substances (including
clandestine laboratory evidence) are analyzed with chemical
presumptive tests, and confirmed by a gas chromatograph/mass
spectrometer (GC/MS) and/or infrared spectrometry using a Fourier
Transform Infrared Spectrometer (FTIR).
Toxicology:
I) General
Toxicology:
Unknown substances are screened for compounds using immunoassays
and confirmed with a gas chromatograph/mass spectrometer
(GC/MS).
II) Blood/Urine
Alcohol:
Alcohols are analyzed by injecting headspace into a gas
chromatograph coupled with a flame ionization detector
(HSGC-FID).
III) Blood/Urine Drug:
Drugs are screened using immunoassays and confirmed with a gas
chromatograph/mass spectrometer (GC/MS).
Biology:
I) DNA - Nuclear:
Short Tandem Repeat (STR) DNA information is characterized using
capillary electrophoresis with a genetic analyzer.
II) Serology (Body Fluid Identification):
Serological screening utilizes chemical and/or immunoassay
presumptive tests to detect bodily fluids.
Latent Prints:
I) Latent
Print Processing:
The visual and chemical examination of evidence for the presence
and preservation of latent prints.
II) Latent
Print Comparison:
The Analysis, Comparison, Evaluation, and Verification (ACE-V)
method is used to compare print evidence to known prints.
Questioned Documents:
The comparison of
questioned document evidence (such as, but not limited to
handwriting, indented writing, ink comparisons, and alterations) to
known samples using a side-by-side comparison to determine class
and individual characteristics.
Trace Evidence:
I) Paint:
Evidence is observed microscopically and may be analyzed by a
variety of methods, to include: determining x-ray
fluorescence, microspectrometery, infrared spectrometry using a
Fourier Transform Infrared Spectrometer (FTIR), and/or pyrolysis
with a gas chromatograph/mass spectrometer (GC/MS).
II) Physical Comparisons:
The comparison of objects (such as, but not limited to vehicle
parts, paint, glass, and tape) is observed macroscopically and
microscopically for class and individual characteristics.
III) Fiber and Textiles:
Evidence (such as clothing and rope) is observed microscopically
and may be analyzed by a variety of methods, to include:
determining x-ray fluorescence, microspectrometery, infrared
spectrometry using a Fourier Transform Infrared Spectrometer
(FTIR), and/or pyrolysis with a gas chromatograph/mass spectrometer
(GC/MS).
IV) Glass:
Evidence is observed microscopically and analyzed by a glass
refractive index measurement system.
V) Hair (microscopic examinations):
Evidence is microscopically examined for the presence or absence of
roots, and to determine human or animal origin.
VI) Explosives:
Evidence may be analyzed by a variety of methods, to include:
microscopy, determining x-ray fluorescence, microspectrometery,
infrared spectrometry using a Fourier Transform Infrared
Spectrometer (FTIR), and/or pyrolysis with a gas chromatograph/mass
spectrometer (GC/MS).
VII) Analysis of Unknowns:
Evidence (such as poisonous substances) may be analyzed by a
variety of methods, to include: microscopy, determining x-ray
fluorescence, microspectrometery, infrared spectrometry using a
Fourier Transform Infrared Spectrometer (FTIR), and/or pyrolysis
with a gas chromatograph/mass spectrometer (GC/MS).
VIII) Fire
Debris:
Evidence is analyzed using passive adsorption by a gas
chromatograph mass spectrometer (GC/MS) to determine the presence
or absence of an ignitable liquid.
IX) Tape:
Evidence is observed microscopically and may be analyzed by a
variety of methods, to include: determining x-ray
fluorescence, microspectrometery, and/or infrared spectrometry
using a Fourier Transform Infrared Spectrometer (FTIR).
X) Filament / Headlight:
Evidence is observed microscopically, and may be tested for
functionality.
Firearms and Toolmarks:
NIBIN Entry:
National Integrated Ballistics Information Network (NIBIN) entry
and correlation using the Integrated Ballistic Identification
System (IBIS).
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