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Forensic Biology

The OSBI Forensic Biology discipline 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 discipline 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
  • Screening of Hairs for DNA

Deoxyribonucleic acid (DNA) Analysis:

  • Nuclear DNA Testing (STR)
  • Male Specific DNA Testing (Y-STR)
  • Criminal Paternity Testing
  • Screening of sexual assault kits for male DNA (Y-screening)

The OSBI Forensic Biology discipline 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 eligible offender samples from the State of Oklahoma for entry into the national database.

Specific Requirements for Evidence Submittal for the Forensic Biology discipline:
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 does not meet CODIS eligibility requirements
  • DNA analysis of controlled substance evidence
  • Felon in possession of firearms
  • Touch DNA analysis when the item is known to have 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 Janice Joslin, Director of Criminalistics; Mistie Burris, Criminalistics Administrator; or Grace Helms, Criminalistics Administrator.