Rebecca- I had no problems and was considered low risk (due to my age and fam history) to get the NT done. What my GP wrote on the referral was a standard letter stating that I would like to be tested for the NT. No questions were asked about my family history or my partners. When I paid the money at the hospital I was given a receipt and took it to Medicare that afternoon and recieved half of my money back. No problems at all. I am in NSW- not sure if this is different in other states but Medicare is a national thing.