You are here

Forensic Biology

The OSBI Forensic Biology Unit (FBU) is a discipline of the OSBI Criminalistics Services Division housed at two locations in the state.

Forensic Science Center in Edmond, Oklahoma

Northeast Regional Laboratory in Tahlequah, Oklahoma

The Forensic Biology Unit specializes in the identification of body fluids and deoxyribonucleic acid (DNA) analysis of samples collected in criminal investigations.

Serology Testing:

  • Identification of body fluids including
  • Blood
  • Seminal Fluid

Deoxyribonucleic acid (DNA) Analysis:

  • Nuclear DNA Testing (Autosomal)
  • Male Specific Testing (Y-STR)
  • Criminal Paternity Testing
  • Identification of Hairs for DNA

The OSBI Forensic Biology Unit analyzes evidence differentiated into the following categories:

Major Crimes
Major crimes consist of violent crimes such as assaults, sexual assaults, criminal paternity cases, and homicides.

Property Crimes
Property crimes consist of crimes that are non-violent such as burglaries and auto-theft.

Cold Case
Cold cases are cases in which all reasonable leads have been exhausted.

Combined DNA Index System (CODIS)
The Forensic Biology Unit works in conjunction with the Combined DNA Index System (CODIS) Unit to enter appropriate evidentiary samples into the National DNA Index System (NDIS).

The CODIS Unit also processes convicted offender samples from the State of Oklahoma for entry into the national database.

Specific Requirements for Evidence Submittal for the Forensic Biology Unit:
The following are case requests that are typically not accepted in the OSBI Forensic Biology Unit:

  • Animal and plant DNA analysis
  • No suspect DNA analysis which do not meet CODIS eligibility requirements
  • DNA analysis of controlled substance evidence
  • Sexual assault cases where suspect admits to intercourse
  • Felon in possession of firearms
  • Touch DNA analysis when the item is known to been handled without gloves during or after collection 
  • Contact DNA analysis on airbags

All DNA requests should be submitted with known reference samples from the victim(s), suspect(s) (if applicable), and exclusionary samples as necessary.

For exceptions to cases typically not accepted, please contact Andrea Fielding, Director of Forensic Science Services or Jim Stokes, Forensic Biology Discipline Criminalistics Administrator.


Forensic Science Center
800 East 2nd Street
Edmond, OK  73034
Phone: 405-330-6724
Fax: 405-330-6207

Forensic Biology Supervisor
Ryan Porter

Specialized Forensic Biology Supervisor
Todd Lindsey

Cold Case Supervisor
Wendy Duke

CODIS Supervisor
Lesley Perry


Oklahoma State CODIS Administrator
Karen Oyerly

Northeastern Regional Laboratory
1995 Airport Parkway
Tahlequah, OK 74464
Phone: 918-456-0653
Fax: 918-458-0037

Laboratory Supervisor
Joseph Orcutt