In my opinion, I do not think this is a liver issue. Teddy is almost 10 months old now. There would have been signs pointing to LS before now, and he has had bloodwork done several times in the past all coming back perfectly normal. I am aware that LS is the number one cause of seizures, etc., and that's what everyone (including vets) look into first, but, having met Teddy on several occassions, I definately think that this is something neurological, and I would take him to a specialist for more tests - perhaps even a Catscan or MRI.

Poor baby!!!! I sure hope he feels better soon!!! :( xxx and prayers coming your way!

My Reply
 

Something similar happened to Bear. We spent lots of $$ on blood panels and vet visits without any indication as to what it was. The vet could find no issues with blood sugar or any vital organ issues. So we back tracked to when the problem started.
We introduced a female into our family and began using her food because the previous owner said she has a sensitive stomach- Royal Canin. A friend suggested we look at the ingredients in the food for answers and that it could be the difference in one having sugar beets and one not.
Low and behold it was the food. We switched back to Natural Choice and have not had an episode since.
Yorkies and all small dogs are prone to hypoglycemia. Stress can bring it on in a hurry. Long bouts of play with no water or food/snacks can as well.
Your baby could have had an episode like Bear. We keep packets of honey on us where ever we go, if he became listless, disoriented or seized we put the honey on his tongue and in 20 minutes or so, he was right as rain. Of course, the idea is to keep them from stress in the first place, but the honey is worth a pound of cure.
I do hope this is helpful but contact your vet if issues continue. Best wishes.

Update on Teddy
 

Teddy's Bile Acids came back completely normal :) with levels that were at the low ranges of reference (less than 1 preprandial and 9.3 postprandial). So, we have ruled out liver shunt and MVD as possible causes of the seizure. Our next step may be to consult with a neurologist but we are not likely to put him through invasive and costly testing without further symptoms or illness.

Thanks to everyone who offered advice and prayers. We'll let you know how Teddy continues to do!