Hi Cupcake and JM
I recall from the
old NSW Dept of Health website that family research was mentioned as a valid reason to request access to records. If familial medical traits are suspected there might be even stronger grounds to allow access. I also think that like anything to do with the DoH, it is going to come down to who reads your application and what mood they are in on the day...

I note also that the link to NSW DoH I gave on this thread a year ago (which is also the same link currently contained within the NSW Records link that JM kindly gave you), is no longer valid. The NSW DoH has only recently become the
Ministry of Health (goodness knows what
that little change has cost us all in new stationery

).
I have searched their new site for the same info regarding files of relatives and archive records, but was unable to find it tonight. I do hope that you managed to read the info off the old site before it was taken down. I am confident that the postal address remains the same for formal applications to access records as the new MoH is still based in North Sydney.
I'd be very keen to know too how you get on. Best of luck

Kind regards
Miss May