Forensic toxicology is a scientific discipline which studies the medical and legal aspects of the harmful effects of a substance on organisms, and by chemical and analytical methods helps to establish facts in forensic investigations. Forensic practice is particularly significant for fatal poisoning, as well as those that may be related to the commission of criminal acts.

Despite the constant advancement of medicine in the fields of detection, diagnostic options, and modern forms of treatment, the incidence and mortality of malignancies is in an upward trajectory. The fact of the existence of a malignant disease in the patient results in shock, disbelief and fear, and fright of pain, suffering, and possible death. There is frequent anger and regret about interrupting the usual lifestyle and disrupting life plans. These are normal reactions and with the support of the family and the environment, affected person are successfully dealing with these difficulties