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The mission of the Johnson County Sheriff’s Office Criminalistics Laboratory is to aid in criminal
investigations through timely, unbiased, high quality forensic services performed by highly
trained experts using state-of the art instrumentation and scientific techniques.

Crime Lab

Johnson County Sheriff’s Office
Criminalistics Laboratory
11890 S Sunset Drive
Olathe, Kansas 66061
Phone: (913) 826-3209 Fax: (913) 826-3286

The crime laboratory is accredited by the American Society of Crime Laboratory Directors/Laboratory Accreditation Board (ASCLD/LAB), and has been accredited  since 1999. The laboratory is currently accredited under the ASCLD/LAB-International Testing program (certificate #: ALI-111-T), and provides accredited examinations in the following disciplines:

  • Biology
    • Body Fluid Identification
    • DNA - Nuclear
  • Drug Chemistry
    • Controlled Substances
  • Crime Scene Investigation
    • General Crime Scene Investigation
    • Crime Scene Reconstruction
    • Bloodstain Pattern Interpretation
  • Digital & Multimedia Evidence
    • Video Analysis
    • Computer Forensics
  • Firearms/Toolmarks
    • Firearms
    • Toolmark
    • Serial Number Restoration
  • Latent Prints
    • Latent Print Processing
    • Latent Print Comparisons
    • Impression Evidence (Footwear/Tire Track)
  • Toxicology
    • Human Performance Forensic Toxicology
      (blood alcohol only)
  • Trace Evidence
    • Paint
    • Fibers and Textiles
    • Glass
    • Hair
    • Fire Debris
    • General Physical and Chemical Analysis

Recent Updates:

April 25, 2014: Toxicology (blood alcohol only) and Computer Forensics examinations have been added to our officially accredited scope of analysis.

December 20, 2013: Beginning January 1st, 2014, Controlled Substance, Toxicology and Firearm reports will include measurement uncertainty values when drug weight, blood alcohol concentration or firearm length values are reported. Per our accrediting body, we are required to begin calculating and providing measurement uncertainty for these reported values. At this time, no other laboratory reports will be affected.  See the formal announcement for additional information.

Photo credit:

Allan Hamm Allen Hamm
Interim Laboratory Director
Last updated: 12/3/2015 7:15:55 AM