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Bloodstain Pattern Analysis Subcommittee

OSAC Bloodstain Pattern Analysis SC icon only


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 | Standards | Discipline-Specific Baseline Documents | Research & Development Needs | Presentations



Holly Latham, Subcommittee Chair, Kansas Bureau of Investigation

Jeff Gurvis, Subcommittee Vice Chair, National Forensic Support Laboratory 

Peter Valentin, Subcommittee Executive Secretary, University of New Haven


Nicole Blackwell, Kansas City Missouri 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, Indiana State Police

Catherine Knutson, Minnesota Bureau of Criminal Apprehension (Quality Representative)

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

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

Kate Philpott, Self-employed (Legal Representative)

Elizabeth (Toomer) Pierri, Naval Criminal Investigation Service

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

Susan Rinehart, Los Angeles Police Department

Celestina Rossi, Montgomery County Sheriff's Office

Lauren Sautkulis, San Diego Sheriff's Regional 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 Ribbon

Tier 1: On the OSAC Registry

Tier 2: Published by an SDO

Tier 3: Sent to an SDO

  • None currently.

Tier 4: Under Development

  • Standard for Technical Review of Bloodstain Pattern Analysis Reports.
  • Standards for Developing Standard Operating Procedures in Bloodstain Pattern Analysis.
  • Standard for a Certification Program for Bloodstain Pattern Analysts.
  • Guidelines for Proficiency Testing in Bloodstain Pattern Analysis.
  • Standard for Classifying Bloodstain Patterns.
  • Standards for Reporting Reconstruction Conclusions in Bloodstain Pattern Analysis.
  • Standard for Documentation and Review of Case Experimentation.
  • Standard for Bloodstain Pattern Analysis Methodology.

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.

Research & Development Needs


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 October 1, 2020