Thank you for your response it has been helpful. Just one quick question..... can I ask why you think a biopsy may be needed in the future?
I would like to know as I have really had to drive this a bit myself and insist on certain investigations. I do not want to waste time and perhaps end up with more, or potential, kidney damage. In our rural area it can be 6 weeks between available GP appointments and I would rather go in with more knowledge. I also work in health and my GP is very receptive to me doing a bit of research in the background (probably because she is so busy).