I have lost almost a half a dozen chickens to what I believe is Mareks. I have a rooster that I had euthanized at the vet's office and we are going to send him to UC Davis for a necropsy. I am filling out the paperwork and had a question. The form asks for "tests requested". I would like to know what caused my rooster's illness. Do I just put necropsy or should I ask for something more specific? I should have done this when I started losing my flock, one by one. To say I am heartbroken is an understatement, but I am also mad and scared and want to know what is killing all my chickens.