I bile acid test puppies for three reasons: (1) so that I know what I am producing; (2) so that I know I am not selling a puppy with a liver shunt; and (3) so that if a puppy has higher than normal bile acid results I am the person who explains to the buyer what that all means. If a buyer chooses to walk away from the puppy that is their right. But I'd rather be the person to break the news and explain and educate rather than have a buyer find out from a vet, a friend, or someone on the internet who may have far less breed specific knowledge than me. Just me ... I don't like bad surprises and will try to avoid them if at all possible. And to me the worst surprise of all would be to sell a puppy with a liver shunt, especially when there IS a non-invasive, reasonably inexpensive test known as a bile acid test that will tell me what I need to know beforehand so that I am not selling heartbreak.