I will be honest here. This is the type of question that should be answered by your doctor. It is a little beyond what we would be able to say on the board. You really need to get all the information you can from your doc. Make him make it clear to you the pro's and con's of the disfuntional kidney. You can live a pretty normal life with one kidney. Some will opt of dialisis if it looks like it warrent it. Doc might give you a fluid intake daily chart to keep the 70% kidney working at it's fullest.

This is your health we are talking about. You need to know everything you can about it.

Hi
Welcome to e-health. Do you know what your GFR is? What tests have you had done? It sounds like you had a renal scan. Are you seeing a nephrologist? What did the Dr. say? This might help.
http://www.kidneypatientguide.org.uk/site/ contents.php
I wish you the best.

Hi and Welcome

You should consult with your doctor in the meantime look at the sticky at the top of the forum.
There's a site called kidneyschool.org in the sticky which gives you a brief teaching tutorial.
Best wishes and keep us posted.