I had one done a few years ago when I was having liver issues. Turns out I had some fat deposits in my liver, or Fatty Liver Disease. My liver wasn't inflamed or anything so there wasn't a need to do a biopsy. I found this out because I had elevated levels when I was off cycle. My diet has always been pretty good, but apparently this is something that many people in America are getting diagnosed in the past several years. Something like 400,000 Americans have it now I believe.
Let us know what happens with the results.