Matthew Perry's death was not caused by fentanyl or methamphetamine, according to preliminary tests conducted after the "Friends" star's sudden passing over the weekend.

He died of an apparent drowning in a hot tub at his Pacific Palisades residence at the age of 54.

It is still uncertain whether Perry had lethal levels of prescription medications, as numerous prescription drugs were discovered at his residence, or if he had any illicit substances in his system.

A complete toxicology report is anticipated to take a minimum of six weeks, with a more probable range of 4 to 6 months, and an official cause of death has not yet been established.

The Los Angeles County medical examiner had classified his autopsy status as "deferred" on Sunday, with no indications of foul play.

Authorities discovered prescription anti-depressants, anti-anxiety medications, and medication for chronic obstructive pulmonary disease (COPD) at Perry's home, which affects breathing. No illegal substances were found.

If the toxicology report eventually reveals narcotics, the Robbery Homicide Division of the Los Angeles Police Department will continue the investigation.

Perry, the author of "Friends, Lovers, and the Big Terrible Thing," passed away alone at home after playing pickleball earlier on Saturday and sending his assistant on an errand. Law enforcement sources reported to TMZ that Perry's body was not waterlogged when paramedics arrived at the scene, indicating that he had not been submerged for an extended period.

People close to the actor, who had been open about his struggles with substance abuse and alcoholism, mentioned that he had been sober in recent weeks and was feeling happier than ever.