Medical specialists are warning a change to the way women are tested for cervical cancer is risky and premature.
From 2018, three-yearly primary cervical screening tests based on cell analysis will be replaced with tests for human papillomavirus (HPV) - which causes more than 90 per cent of cervical cancer - every five years.
Announcing the change on Wednesday, Health Minister Jonathan Coleman said it was expected to reduce the number of cervical cancer deaths.
But in a strongly worded editorial, published in the New Zealand Medical Journal today, a group of specialists and researchers criticised the move as "premature and wrong".
"This decision could reduce the current level of cervical cancer protection and increase unnecessary referrals for assessment and treatment," the authors said.