Fire has taken hold of a building at Latrobe Regional Hospital, Traralgon

Up to 50 people have been evacuated from the Latrobe Regional Hospital at Traralgon after a fire in the roof space. 

The blaze is located in a stand-alone building that houses a pathology practice. 

10 CFA crews remain on scene, the cause of the fire is not yet known.

Emergency crews will remain on scene for some time Photo: Nine News