That bloodstain analysis you see on TV? It has error rates as high as 32% and zero actual science to back it up.
SSRN · March 17, 2026 · 6410278
The Takeaway
Despite being used in courts for decades, this research reveals that the field has no standardized discipline and few peer-reviewed studies to prove it works. The high error rates and vulnerability to 'contextual bias' suggest that what we see on crime shows is often more guesswork than science, potentially distorting the entire fact-finding process in criminal trials.
From the abstract
<span>Despite its long history of admission throughout North America, there appears to be no published Canadian case subjecting bloodstain pattern analysis to the special scrutiny Canadian law demands for novel or contested scientific evidence. Instead, courts have admitted the evidence based largely on the training and experience of forensic examiners, taking it for granted that the field is sufficiently reliable. However, the application of the White Burgess framework reveals that there are se