Bone scans on Melbourne Cup hopeful Duretto have not shown any identifiable issues with the horse to undergo more tests before a decision is made whether he is in suitable condition to run in the big race.

The English stayer underwent the scans on Tuesday after pulling up lame after a gallop at Werribee on Saturday.

"Racing Victoria stewards advise that bone scans conducted today on the Andrew Balding-trained Duretto at the University of Melbourne Equine Centre have not presented any identifiable issues with the horse," RV said.

"UoM veterinarians will, however, keep Duretto at the Equine Centre overnight and conduct further examinations tomorrow to help determine why the horse was lame in its left foreleg following a track gallop at the Werribee International Horse Centre last Saturday."

Duretto has been restricted to box rest.

Duretto finished fourth in the Caulfield Cup in his first Australian appearance last Saturday week.