leukosight forensics


Owner John "Calvin" Gaziano, MFS, MS, CBPA, CSCSA

John Calvin Gaziano, the owner of Leuko-Sight Forensics, is a Sergeant with the Fremont Police Department. He began his law enforcement career 24.5 years ago and has worked as a Crime Scene Investigator (CSI) for the past 17 years. He has investigated homicides, sexual assaults, officer-involved shootings, and various other type of incidents. He has testified in court as an expert in bloodstain pattern analysis (BPA) and as a crime scene investigator.

Calvin received a Master of Forensic Science Degree with honors from National University, a Master of Science degree from San Jose State University, and a Bachelor of Science degree from the University of California, Berkeley.

Calvin has completed 2,000 hours of certified training related to crime scene investigation and bloodstain pattern analysis, including the following: multiple advanced crime scene investigation and reconstruction courses, advanced BPA courses, advanced homicide courses, a forensic shooting reconstruction course, a visualization of latent bloodstain course, an expert witness testimony courtroom course, multiple death scene investigation courses, a math and physics BPA course, and many others. 

Calvin is a Certified Bloodstain Pattern Analyst (CBPA) and a Certified Senior Crime Scene Analyst (CSCSA) with the International Association for Identification (IAI) and is a current member. He is also a member of the International Association of Bloodstain Pattern Analysts (IABPA) and the Association for Crime Scene Reconstruction (ACSR). He received a certification in homicide investigation through Robert Presley's Institute of Criminal Investigation (ICI POST).

Calvin has been published in Robinson's Crime Scene Photography 3rd Edition textbook. He authored a 230-page bloodstain pattern analysis manual titled "Bloodstain Pattern Analysis: An Investigative Approach." He also authored a 116-page research paper titled "Reconstruction of Bloodstain Impact Patterns: Error Rates."





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