You pay good money to take care of your pets there is no reason any vet ( or any Dr.) shouldnt answer your questions. Even if they don't know the answer saying so is better than not answering and leaving you in the dark. Which is a bad place to be when its someones health your talking about. I learned the hard way from my Grandma blind faith in a Dr. isnt good, if you have any doubts or dont get results go some place else.