👉 A witness fluid, often associated with the term "witness fluid" in forensic science, refers to a substance that is collected from a crime scene and analyzed for its unique chemical or biological characteristics. This fluid can include bodily fluids like blood, semen, saliva, sweat, or other secretions, which are preserved and examined to identify the individual who produced them. The analysis of witness fluid can provide crucial evidence in criminal investigations, helping to establish the presence of a suspect at a crime scene or linking them to specific actions. Techniques such as DNA analysis, protein profiling, and chemical composition testing are commonly used to characterize these fluids, making them valuable tools in forensic investigations.
