Looks like you're just getting started on a diagnosis. There are likely many tests ahead for you to help put the pieces together. At least he's started with some of the basics (B12, GGT, and others). Like MrsD said, you need the number.

Sure it's great to have family history, but the focus is on you anyway so don't let this stress you. I'm adopted and the only difference it made was that the doctors looked at 'everything' instead of just what family members would have had history of.

Keep us posted.