Mrs D, I have seen a naturopath and she took a fingerprick of my blood and put it under a microscope and showed me on a screen - I could see that there are a few blood cells that are bigger than normal. Does that mean I have PA?

I live in Australia so I'm not sure whether we do the Schilling test here. My Dr ordered it, so maybe they do it here. How is PA tested? Are low B12 and PA mutually exclusive or are they usually diagnosed together?