Review of Perth Mint by London Bullion Market Association sees it remain on association's 'good delivery list'

The Perth Mint has retained its good standing with the London Bullion Market Association, which launched a probe into the refinery last month.  (Supplied: Perth Mint)

Perth Mint has been allowed to remain on a list of approved refiners to operate on the London bullion market, but told to strengthen its management systems in a review by the key international gold and silver trade association.

The London Bullion Market Association (LBMA) launched an incident review of the mint's practices in mid-March following allegations raised in an ABC Four Corners report about gold dilution, or "doping", and concerns around money laundering safeguards.