FORMER West Coast Eagles star Chris Mainwaring had taken a cocktail of drugs, including cocaine, before his sudden death, it was reported last night.

The report said Mainwaring had cocaine, ecstasy, cannabis, anti-depressants and the acne drug, Roaccutane, as well as alcohol in his system when he died. The sports presenter for the Seven Network in Perth collapsed and died in Perth early this month, shortly after refusing help from police and ambulance officers.

The two-time premiership player had reportedly been on a weekend binge, with police and ambulance officers called to his home after a complaint that he was yelling in the street.

He refused help and was left in the care of a neighbour, but collapsed soon after.

Sacked West Coast player Ben Cousins visited his friend twice on the day he died.

Channel Nine in Perth said it had obtained Mainwaring's toxicology test. WA Police said the release of the toxicology report was not the force's responsibility. "It has nothing to do with us. It is up the the state coroner's office," said a spokeswoman. The report could also be released by Mainwaring's family, she said.

Cousins was devastated by Mainwaring's death, which might have led to a possible relapse only six months after his stint in a US rehabilitation clinic, according to drug experts.

Rehabilitation was an ongoing process and relapses were a realistic part of a person's recovery, said Lisa Chapman, clinical manager of Sydney rehabilitation clinic South Pacific Private.

This could be triggered by a difficult event or the stress of taking on too much too soon.

"Needless to say when you're under a lot of stress or you're going through a trauma or loss, those feelings come up and their intensity is profound and the need to medicate is that much greater," she said.

"Walking down the street and getting through recovery is difficult enough, but you add to it a level of stress or a level of pressure that is extreme, and certainly the propensity to relapse is huge."

James Lawton, acting chief executive of the Palmerston Association, one of WA's leading drug treatment centres, said relapses were not unusual.

In such cases, the person needs to get back into their rehabilitation program or pursue counselling.

Cousins had been expected to fly back to the US for further treatment at the exclusive Summit Centre in Malibu soon.

The US Consul General in Perth confirmed that a person was ineligible to enter the US if they had been arrested or convicted of an offence or had unlawfully distributed or sold a controlled substance. They would need to pass an interview process to gain entry to the US.

The Summit Centre would not answer questions on whether it was expecting Cousins back.

With AAP