Hi, I have always (at least last 15 years) suffered with varying degrees of iron deficiency anaemia (probably due to heavy periods and diet), with Hb being between 8.0 and 10.0, so not horrendously bad. Recently had bloods done at the GPs and I asked him to check my B12 and Ferritin levels (out of interest). Wish I hadn't now as B12 has come back as "low" and Ferritin levels are very low (7). I have suffered with other autoimmune diseases in the past (graves disease and currently hypothyroidism) and was once told that I'd be susceptible to pernicious anaemia (B12 deficiency) which the GP says I now have. The thing that is concerning me is that he has referred me to the gastroenterologist. Is this a standard thing to do with B12 deficiency?