A toxicology report from Prince's autopsy, obtained Monday by The Associated Press, shows he had what multiple experts called an "exceedingly high" concentration of fentanyl in his body when he was found dead.
He was 57 when he was discovered alone and unresponsive in an elevator at his Paisley Park estate on April 21, 2016. Six weeks after his death, public data released which showed he died of an accidental overdose of fentanyl, a synthetic opioid 50 times more powerful than heroin.
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A confidential toxicology report obtained by the AP provides shows just how much fentanyl was found. Experts who are not related to the Prince investigation said the numbers leave no doubt that fentanyl was the cause of death.
"The amount in his blood is exceedingly high, even for somebody who is a chronic pain patient on fentanyl patches," said Dr. Lewis Nelson, chairman of emergency medicine at Rutgers New Jersey Medical School. He called the fentanyl concentrations "a pretty clear smoking gun."
As per the report, the concentration of fentanyl in Prince's blood was 67.8 micrograms per liter. The report explains that fatalities have been documented in people with blood levels ranging from three to 58 micrograms per liter.
The report also says the level of fentanyl in Prince's liver was 450 micrograms per kilogram and notes that liver concentrations greater than 69 micrograms per kilogram "seem to represent overdose or fatal toxicity cases."