Peter Moody is likely to learn this week whether he will be charged over an elevated cobalt reading returned by Lidari.

Victorian trainers Mark Kavanagh, Danny O'Brien and the partnership of Lee and Shannon Hope have been charged after lengthy investigations into cobalt readings above the allowed threshold detected last year from horses in their stables.

Flemington Equine Clinic vet Dr Tom Brennan, who was employed by O'Brien and Kavanagh, has also been charged.

The Moody-trained Lidari returned a reading above the allowed threshold of 200 micrograms per litre in urine after his second in last year's Turnbull Stakes.

Racing Victoria has continued its investigations into Lidari's level and chief steward Terry Bailey says he expects to announce the findings this week.

"I'd be very surprised if we don't have some developments this week," Bailey told RSN Radio on Monday.

"The trial results that we've been waiting on are through. Mr Moody, I understand, is back in town this week so you can pretty much bank on some movement this week.

"Mr Moody gave us an explanation which may explain the elevated cobalt level and we've put that explanation to the test and simply been waiting on those trial test results and they came through late on Friday."

Moody has been on an overseas holiday in recent weeks.

Dates for hearings into the charges laid against O'Brien, Kavanagh, Brennan and the Hope partnership have yet to be set.

Brennan will appear before Racing NSW stewards later this month to answer charges stemming from the case against Sydney trainer Sam Kavanagh, son of Mark Kavanagh.