Her anti-parietal cell antibodies have come back negative, and the anti-intrinsic factor ones are unaccountably still not back yet, which doesn't exactly help us in terms of confirming pernicious anaemia (although they aren't always positive in this condition either). We've decided to do another gastroscopy with a view to getting a biopsy of the stomach, which should settle the matter. We've also done a brief screen for concomitant disorders of other endocrine glands (e.g. thyroid, adrenal cortex), which can be simultaneously dysfunctional in certain cases of pernicious anaemia.
Her anti-intrinsic factor antibody assay has come back positive, which helps point towards our original diagnosis of pernicious anaemia.