Pathology Australia will attempt to kill $650 million in cuts for diagnostic tests such as blood tests and X-rays with a consumer campaign to run in 5000 pathology collection centres across the nation.

The pathologists' lobby group, which represents big corporates such as Sonic Healthcare, said on Tuesday that it was "about to launch a consumer campaign" opposing cuts to the bulk-billing incentive for diagnostic imaging and pathology announced by Treasurer Scott Morrison in the Mid-Year Economic and Fiscal Outlook.

Pathology Australia chief executive Liesel Wett is launching a campaign against MYEFO cuts.

"We don't want people facing situations where they are unable to get their pap smears and their life-savings blood test," said Pathology Australia chief executive Liesel Wett.

"We want people to be able to access the expert opinions of pathologists for cancer diagnosis without having to worry about the costs. If patients have to pay, they may think twice about getting their tests. This will cost the health system more in the long term."