Must have missed where you linked lol. I would start the tests at 6 months. The BAT can be done and should be any way to check Kupo's liver function. I'm sure your health guarantee covers genetic disorders which from my understanding is what a liver shunt is. OFA tests have to be done at 1 years of age at least.
Yes plenty of families in the military would looooove a yorkie, but you'd have to be especially careful because of relocation. One of my husband's soldiers has rehomed 6
animals! I'm not sure if it's due to relocation or what, but when the wife asked me if she could have a pup if I breed my husband said my face looked like I was about to call her everything but her govt name.