Bowel Cancer Australia says less than 20 per cent of bowel screening participants who require a colonoscopy are getting it within the recommended 30 days.
Waiting lists for colonoscopies have been growing across the country, with some patients waiting up to a year to access one in the public health system.
Doctors are concerned the delays are undermining the screening process and could be fatal.
“We have known since 2012 that colonoscopy waiting lists are becoming a big issue in the public setting, starting with Queensland and Victoria, Western Australia more recently and of course Tasmania,” said Julien Wiggins, the CEO of Bowel Cancer Australia.
He said the situation was unacceptable.
“When it comes to the screening program itself, we’re seeing wait times up to six months in particular, however in the public setting in some instances we do know of nine months, in other states it’s four months,” he said.
“Only 17 per cent of people with a positive test are seen within the recommended 30 days.”
Margaret Parker waited 12 months for a colonoscopy in the public system before paying for one privately. The test found two tumours.
“Twelve months is a long time with an aggressive tumour,” she told 7.30.
“Yes, I probably would have had the radiation and the chemo, that would have still been there, but the percentage of success probably would have been higher.”
The Tasmania Health Service last year sent letters to doctors and patients advising of delays in Hobart.
General practitioner Dr Graeme Alexander has been speaking out about the issue in Tasmania.
“We had patients, sitting, waiting on that list where we’re saying to them ‘yes, you might have bowel cancer’.”