Carrie went into cardiac arrest on a flight back in December 2016, and now, a toxicology report obtained by OK! is giving a fuller picture of the state she was in at the time.
"Urine toxicology collected at 12/23/2016 at 1417 hours was positive for cocaine, methadone, opiates, and ethanol," the report read.
Multiple factors led doctors to conclude that "exposure to heroin took place."
Carrie also suffered from another disorder, which contributed to her death.
"Ms. Fisher suffered what appeared to be a cardiac arrest on the airplane, accompanied by vomiting and with a history of sleep apnea."
"Based on the available toxicological information, we cannot establish the significance of the multiple substances that were detected in Ms. Fisher's blood and tissue, with regard to cause of death."