Chemistry Section


The Drug Chemistry Section is responsible for the analysis of controlled substances, clandestine laboratory, and general chemical and alcoholic beverage evidence.

Watch the Chemistry Section video

Types of Testing:

  • Alcoholic Beverage Examination: Determine the ethyl alcohol content of suspected alcoholic beverages.
  • Clandestine Laboratory: Analyze evidence from suspected clandestine laboratories for the presence of precursors, finished products, reagents and solvents.
  • Controlled Substances: Analyze evidence for the presence of controlled substances.
  • General Chemical Analysis: Apply chemical analysis techniques to assist in the investigation, solving and prosecution of crimes. Examples include vandalism, suspicious deaths, pharmaceutical tampering, and suspected poisoning.

Forms and Notices

Evidence Custody Receipt
KBI Forensic Science Laboratory Evidence Submission Guidelines *Updated

Chemistry Section Supervisor

Christa Knox – (785)-296-3046

The Chemistry Section is located in our Great Bend, Pittsburg, and Topeka Laboratories.

Great Bend
KBI Forensic Science Laboratory
625 Washington
Great Bend, KS 67530
(620) 603-7112
KBI Forensic Science Laboratory
821 N. Broadway
Pittsburg, KS 66762
(620) 308-7576
KBI Forensic Science Center
2001 SW Washburn Avenue
Topeka, KS 66604
(785) 296-1137