I think that soon enough the results will come in and maybe then the connection between the two will come together for your dad. It will not do any good for you to call the Dr., they are professionals and they will see the results of the tests and make the decisions accordingly. It is hard for you and your family to go through this and watch him still drink. I understand completely.. my mom has emphysema and still smokes. WHAT???
Be strong and all you can do is be there for your mom. You will need each other and he will need you too. Good luck. Maybe it will all turn out to be less serious than you think. Maybe it will be false alarm... and scare him into looking at it more seriously.