List of Services

Drug Chemistry Questioned Documents
Toxicology Firearms & Serial Number Restoration
  • Cartridge Case Identification to a Firearm or another Cartridge Case
  • Bullet Identification to a Firearm or another Bullet
  • Caliber/Firearm Type for Bullets of Unknown Origin
  • Firearm Function Test
  • Barrel Length/Overall Length of Firearm
  • Trigger Pull Analysis
  • Shot Gun Wad Determination
  • Shot Size Determination
  • Serial Number Restoration
  • NIBIN Entry
Latent Prints
Trace Evidence   


Drug Chemistry:

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).

I)          Beverages:
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 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).

I)          DNA - Nuclear:
Characterizes Short Tandem Repeat (STR) DNA information using capillary electrophoresis with a genetic analyzer detection system.

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 saliva).

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)       Glass:
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.

III)    Fire Debris:
Post-fire debris is examined using gas chromatography/mass spectrometry (GC/MS) to determine the presence or absence of an ignitable liquid.

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.

» Forensic Laboratory

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