New Method Identifies Rat Poison In Humans. medicalnewstoday. May28, 2008.Researchers at the Norwegian Institute of Public Health (NIPH) have developed a method to identify bromadiolone poisoning in humans. Bromadiolone is a rat poison that can be purchased freely in shops. A number of cases have been reported internationally where people have been poisoned, with a mortality rate of 20 percent. [ See ] Image fron wikipedia (rodenticide)