Mr Pakula said breath testing would still be possible under current legislation being debated in parliament, but conceded that Labor had reconsidered the policy after consultation with Victoria's chief judges and the department, as reported by The Age.
"We've provided judicial heads of jurisdiction with broader, but admittedly a less explicit, power to do all things necessary to ensure the effective functioning of their court," Mr Pakula said.
"And that might be asking of a judge to have a breath test but it might also be asking a judge to have a drug test; it might be asking a judge to go off and get psychological help."
The current legislation does not contain the words “random” or “breath test”.
Mr Pakula said it would be the responsibility of the president of the Legislative Council and the speaker of the Legislative Assembly to oversee any testing of politicians.
However, the president of the Legislative Council, Bruce Atkinson, has questioned whether members of parliament have the authority to order breath testing of other members of parliament.
"The government hasn't provided any formal construct for these proposals since its election, and my view remains the same as it did when it was first announced – it would seem to be a totally impractical proposition," he said.
Prior to the state election in November last year, Premier Daniel Andrews pledged to introduce random breath testing for members of parliament.
“Labor will also legislate to give the Chief Justice, the Chief Judge and Chief Magistrate the power to require these random tests of the judiciary," he said.
There was considerable backlash to the proposal from the legal profession.
In September last year, a spokesperson for the Law Institute of Victoria said: "It is unclear what this policy is attempting to achieve."
"Is there any evidence that drug or alcohol use or abuse is a problem amongst the judiciary?” the spokesperson asked.
Bar Council chairman Jim Peters QC told The Age he was not aware of any examples of judges being intoxicated on the bench.