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Bloodstain Pattern Analysis Subcommittee

Members of the OSAC Bloodstain Pattern Analysis Subcommittee
Members of the OSAC Bloodstain Pattern Analysis Subcommittee (July 2019)

The Bloodstain Pattern Subcommittee focuses on standards and guidelines related to the scientific detection and analysis of bloodstain patterns present at crime scenes and on associated evidence.

Officers | Members | OSAC Registry Approved Documents | Documents in Process | Research & Development Needs | Discipline-Specific Baseline Documents | Presentations


Holly Latham, Subcommittee Chair, Kansas Bureau of Investigation

Jeff Gurvis, Subcommittee Vice Chair, National Forensic Support Laboratory (private sector)

Peter Valentin, Subcommittee Executive Secretary, University of New Haven


Nicole Blackwell, Kansas City Police Department

Todd Crosby, Georgia Bureau of Investigation

Cristina Gonzalez, Los Angeles County Sheriff's Department Crime Laboratory

Tom Griffin, Bevel, Gardner, and Associates

Rebecca Hooks, Illinois State Police Crime Scene Services Command

Stephen Michielsen, Ph.D., North Carolina State University

Jeremiah Morris, Johnson County (Kansas) Sheriff's Office Criminalistics Laboratory

Elizabeth (Toomer) Pierri, U.S. Naval Criminal Investigation Service

Elizabeth Richards, Ph.D., U.S. Air Force Office of Special Investigations

Susan Rinehart, Individual

Celestina Rossi, CID - Crime Laboratory, Montgomery County Sheriff's Office

Lauren Sautkulis, San Diego County Sheriff's Department Crime Laboratory

LeeAnn Singley, Grayson Singley Associates, LLC

Haonan Wang, Ph.D., Colorado State University

Gary Wilgus, Ohio Bureau of Criminal Investigation

Kevin Winer, Kansas City (Missouri) Police Crime Laboratory

Toby L. Wolson, M.S., F-ABC, Noslow Forensic Consultations, LLC

OSAC Registry Approved Documents 

  • None currently

Documents in Process

Under Development: 

  • Bloodstain pattern analysis process map. 
  • Conclusion statements for bloodstain pattern identifications.
  • Conclusion statements for bloodstain pattern reconstructions.
  • Bloodstain pattern taxonomy for use in classification of bloodstain patterns.
  • Guidelines for a bloodstain pattern certification program.
  • Guidelines for developing Standard Operating Procedures for bloodstain pattern analysis.
  • Guidelines for proficiency testing in bloodstain pattern analysis.

Work Product Sent to SDO:

SDO Published:

Entered OSAC Registry Approval Process:

  • None currently.

Research & Development Needs

Discipline-Specific Baseline Documents

The Forensic Science Standards Board (FSSB) has provided the opportunity for OSAC Subcommittees to identify baseline documents and reference materials that best reflect the current state of the practice within their respective disciplines. 

These documents contain practical information regarding these disciplines that can help forensic scientists, judges, lawyers, researchers, other interested parties and the general public, to better understand the nature, scope, and foundations of the individual disciplines as they are currently practiced.

It is important to note that the identification of these documents in this venue does not represent an endorsement by OSAC or NIST.  Only documents that are posted on the OSAC Registries constitute OSAC endorsement. All copyrights for these documents are reserved by their owners. Subcommittee position statements or responses to data collections by the subcommittee represent the consensus opinion of the subcommittee, not necessarily the position of the entire OSAC organization or NIST.

BPA Bibliography by Date 2019

BPA Bibliography by Topic 2019

Educational Model for Introductory Bloodstain Pattern Analysis Training

Guidelines for Proficiency Testing in Bloodstain Pattern Analysis

Guidelines for Developing Standard Operating Procedures for Bloodstain Pattern Analysis

Appendix A - SOP Guidelines Section 3:  EQUIPMENT, MATERIALS, AND REAGENTS


In general, the development of standards and guidelines is transitioning from the Scientific Working Groups (SWGs) to the OSAC. Some SWGs will continue to operate to provide other resources within their discipline. The existing SWG documents will remain in effect until updated documents are disseminated by the OSAC or the SWG. SWGDAM will retain the responsibility for updating the FBI DNA Quality Assurance Standards.

– Forensic Science Standards Board: March 2015

Created July 11, 2014, Updated January 7, 2020