I always do the full panel. The issue is that a partial, you still only have partial. And if you suspect issues, you end up running them anyway. Of course it helps that a full panel here is not that much more than a partial (I think it was a bit under 60 or 140 for full). LOL though I did full on Sayblee because she WOULDN'T eat and full on Arwen because she gets almost nothing to eat in order to keep weight down. Both were fine.
My 14 year old Nika has been having some issues. When I took her to the vet her blood test showed the T4 thyroid was low. Years ago I had her tested and she was normal. I had forgotten about the thyroid being a problem. There are a number of issues and problems that can come up as a result of hypothyrodism. Please see this link:
If you suspect your senji to have any of the problems listed get them tested.
My Red and White had low thyroid as well. He was very aggressive in behavior.
Very good link, thank you for sharing it