​Instructors: Gary Graff, CBPA, & Iris Dalley
Course length: 40 hours

The 5-day (40 hour) Bloodstain Pattern Analysis Workshop is designed for detectives, forensic technicians, crime scene analysts, and others involved in bloodstain pattern analysis (BPA). Through lecture and practical exercises, attendees learn and practice accepted methodologies for identifying, documenting, and classifying bloodstain patterns. The fluid dynamics of blood and the association of bloodstain characteristics with the actions that caused them is explored.


Class Requirements

The workshop is designed to develop fundamental knowledge of bloodstain pattern analysis principles and methodologies. No prerequisites; prior investigative or crime scene experience is required.


Course learning Objectives

  • Demonstrate knowledge of the history and development the bloodstain pattern analysis discipline.
  • Demonstrate knowledge of the inherent limitations of bloodstain pattern analysis.
  • Identify and accurately describe discreet bloodstain patterns.
  • Demonstrate the relationship between blood fluid dynamics and bloodstain characteristics.
  • Identify forces associated with the creation of various types of bloodstains.
  • Demonstrate ability to create a variety of discreet bloodstain patterns.
  • Demonstrate ability to estimate impact angles of bloodstains.
  • Demonstrate ability to identify point of convergence of related bloodstains.
  • Demonstrate ability to relate impact angles with points of convergence to estimate area of origin of bloodstains.
  • Recognize proper protective measures to be used in bloodstain scenes.
  • Demonstrate proper photographic and written documentation methods for bloodstain scenes.
  • Demonstrate ability to identify discreet patterns in a basic bloodstain pattern scene.
  • Identify criteria for sequencing bloodstain patterns.
  • Recognize factors which may contribute to contextual and confirmation bias in bloodstain pattern analysis.
  • Identify procedures which promote objectivity and minimize bias in bloodstain pattern analysis.
  • Identify basic format for a bloodstain pattern analysis report.
  • Identify criteria for expert testimony in bloodstain pattern analysis.
Gary Graff, CBPA
Retired from the Federal Bureau of Investigation (FBI) after 23 years of service, Gary Graff’s broad investigative experience included public corruption, fraud, sex crime, property crime, and violent crime and often involved coordination with state and local law enforcement agencies. He specialized in complex cases often involving hundreds of court exhibits and witnesses.  
Iris Dalley Graff
Retiring in 2009, Iris Dalley Graff conducted laboratory analysis, crime scene investigation, and worked with various police agencies in processing and investigating hundreds of homicide investigations, during her career.

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