The success of the Medically Supervised Injecting Centre (MSIC) in Kings Cross is under review with a report due by May 1.

The facility's trial period has been extended to October 31.

Mr O'Farrell said he would vote to end the trial when the matter went before parliament.

He said the supervised injecting room was failing to provide a path to rehabilitation.

Only 211 referrals to detox and rehabilitation were made from 20,783 visits to the centre in the three months to October 2006, The Daily Telegraph reported today. Read more here.

Mr O'Farrell said the government's aims for the MSIC were to provide a safe haven for drug users and a "gateway to rehabilitation".

"The gateway doesn't appear to exist. What we seem to have is simply a safe haven without the efforts to get addicts off their addiction," Mr O'Farrell told reporters in Sydney today.

"It shouldn't just be about managing addiction ... it should be about what the government promised six years ago, providing a gateway into the rehabilitation treatment."

The MSIC is expected to comment later today.

However, MSIC director Ingrid Van Beek told The Daily Telegraph referral was not the centre's main aim.

"The primary aim of the Sydney Medically Supervised Injecting Centre is to keep injecting drugs users alive and to thereby also extend to them a greater opportunity to become rehabilitated," she said.