Excerpt from full report:
1) Keith had a lethal level of TCE and a toxic level of DCE in his blood, brain, liver, kidney, and muscles. The concentrations and the pattern of TCE and DCE distribution in tissues indicate that Keith received these chemicals at about 1-2 hours prior to his death via ingestion and they were likely mixed with alcoholic drinks. The estimated ingested doses of TCE and DCE in Keith’s case are 94.94 g (70.85 mL) and 21.48 g (18.28 mL), respectively.
2) Xylene, ethylbenzene, and toluene were also detected in Keith’s blood and other tissues. The pattern of distribution of these solvents in tissues indicates that Keith received these chemicals via ingestion while he was a live. The estimated volume of xylene, ethylbenzene, and toluene was likely ingested by Keith is 1.7 mL.
3) The estimated volume of the TCE and DCE mixture ingested in Keith’s case is 89 mL, which consists of 79.5% TCE and 20.5% DCE. Most of the technical grade TCE sold in the USA contains about 94% TCE and 6% stabilizers such as epoxides and amines to prevent dehydrochlorination of TCE and the reaction of TCE with metals. However, no dioxane was present in Keith’s blood and tissues. These data indicate that TCE used in Keith’s case was not purchased to clean metals and it was likely used as cleaner for photographic film.
4) The estimated volume of xylene, ethylbenzene, and toluene mixture ingested by Keith was 1.7 mL. It consists of 73.9% xylenes, 20.5% eththylbenzene, 5.52% toluene, which is similar to the composition of the technical grade xylene. It is possible that the technical grade TCE used in Keith’s case also contains 2% technical xylene or the technical grade xylene added to TCE to enhance their solubility in water. Xylene is also used as a solvent in the printing industry.
5) The autopsy showed no hemorrhages, soft tissue injury, dislocation or fractures in Keith’s neck. In addition, Keith’s tongue, larynx, laryngeal cartilages, hyoid bone as well as his cervical vertebral column visually were without injuries. The lack of bleeding and injury in Keith’s neck indicate that Keith’s body was lifted and put in a hanging position
a few hours after death when the muscles of the neck became stiff due to rigor mortis.
6) The police and the county medical examiner missed the cause of death in Keith’s case because they did not conduct the required standard medical-legal investigation in his case.