"The pathologist, Dr. Thomas Noguchi, could find no trace of capsules, powder or the typical discoloration caused by Nembutal in Monroe's stomach or intestines, indicating that the drugs that killed her had not been swallowed. If Monroe had taken them over a period of time (which might account for the lack of residue), she would have died before ingesting the amount found in her bloodstream. Monroe was found lying face down. There was also evidence of cyanosis, an indication that death had been very quick. Noguchi asked the toxicologist for examinations of the blood, liver, kidneys, stomach, urine and intestines, which would have revealed exactly how the drugs got into Monroe's system. However, the toxicologist, after examining the blood, did not believe he needed to check other organs, so many of the organs were destroyed without being examined. Noguchi later asked for the samples, but the medical photographs, the slides of those organs that were examined and the examination form showing bruises on the body had disappeared, making it impossible to investigate the cause of death.
The toxicology report shows high levels of Nembutal (38–66 capsules) and chloral hydrate (14–23 tablets) in Monroe's blood. The level found was enough to kill more than 10 people. An examination of the body ruled out intravenous injection as the source of the drugs. Coroner Dr. Theodore Curphey oversaw the full autopsy. Apart from the cause of death as listed on the death certificate, the results were never made public and no record of the findings was kept."