Controlled substances (including
clandestine laboratory evidence) are analyzed with chemical
presumptive tests and confirmed by gas chromatography-mass
spectrometry (GC-MS) and/or infrared spectrometry (FTIR).
Analysis of ethyl alcohol and detection of other volatile compounds
in unknown liquids is performed on a gas chromatograph coupled with
a flame ionization detector (HSGC-FID) and confirmed by mass
Alcohols are analyzed by injecting headspace into a gas
chromatograph coupled with a flame ionization detector
III) Blood/Urine Drug:
Drugs are screened using immunoassays and confirmed with a gas
chromatograph/mass spectrometer (GC/MS).
I) DNA - Nuclear:
Characterizes Short Tandem Repeat (STR) DNA information using
capillary electrophoresis with a genetic analyzer detection
II) Serology (Body Fluid Identification):
Utilizes chemical and/or immunoassay presumptive tests to detect
bodily fluids for DNA analysis (i.e., blood, seminal fluid and
The visual and chemical examination of evidence for the presence
and preservation of latent prints.
The Analysis, Comparison, Evaluation, and Verification (ACE-V)
method is used to compare print evidence to known prints.
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.
Glass evidence is examined with a variety of
techniques to determine if it could have originated from a
known source of glass.
II) Hair (microscopic examinations):
Hair evidence is examined microscopically to determine if it is a
human hair, and then to determine if there is a root present that
might be examined for DNA.
Post-fire debris is examined using gas chromatography/mass
spectrometry (GC/MS) to determine the presence or absence of an
Firearms and Serial Number Restoration:
NIBIN - National Integrated
Ballistics Information Network.
- A database comprising 2-D images of fired cartridge cases
collected from crime scenes and firearms which can potentially link
two or more crimes to one another.