Medical transfer requests from 50 refugees and asylum seekers are being reviewed by support organisations ahead of a final referral to the government, activists say, disputing Peter Dutton's claim that 250 cases are in the queue.

The Home Affairs Minister's comment on Sunday came as the government mounts its case for repealing the so-called "medevac" laws, which it vowed to do if it won the election.

Peter Dutton said "two doctors from Nimbin" could recommend a detainee for transfer. Credit:Alex Ellinghausen

"With 250 cases now being considered by doctors under the medevac laws, this is a very dangerous period for Labor to go soft on borders yet again," Mr Dutton said.

"The doctors in many cases [are] two advocates ... so two medical practitioners, two doctors from Nimbin, can bring a case under the medevac bill to the government."