What type of evidence can forensic toxicology evaluate?

Forensic toxicology is primarily concerned with the analysis of biological samples, such as blood, urine, and tissues, to detect and quantify the presence of drugs, alcohol, and other toxic substances. This branch of forensic science plays a critical role in various investigations, including those related to overdoses, accidents, and homicides, as it helps establish whether the presence of these substances contributed to an individual's impairment or death.

Biological samples are essential because they provide direct evidence of a person's exposure to potentially harmful substances. The analysis involves sophisticated techniques that can identify specific compounds, allowing forensic toxicologists to draw conclusions about an individual’s state at a particular time. In contrast, the other options center on types of evidence that do not fall under the scope of toxicology. Documents, electronic records, and physical fingerprints are relevant in their respective forensic fields but do not pertain to the evaluation of drugs and toxins, which is the primary focus of forensic toxicology.