The new laboratory information system being rolled out for Western Australia's public pathology service PathWest will be two years late and over budget by $23.7 million, mainly due to poor ICT project governance and delivery, the WA Office of the Auditor-General has reported.

WA went to market in 2015 for the replacement of PathWest's legacy Ultra system, an in-house anatomical pathology system and four molecular genomics databases, with US firm SCC Computer successful in winning a competitive tender in 2016.