The objective of forensic scientists is to reach a conclusion about the possible origin of evidence or identification of a substance. To do this, evidence is collected, analyzed, and compared to physical samples. Upon completion of analysis, forensic scientists testify in state and federal court cases about their findings in criminal trials. K&M specializes specifically in forensic toxicology: the analysis of controlled and illicit substances. Forensic toxicology employs the disciplines of analytical and clinical chemistry and pharmacology to investigate a death, poisoning or drug abuse.