I tested positive for gastric parietal antibodies and high rheumatoid factor and my gp said people usually have pernicious anaemia with this but my vit b12 levels were high with taking supplements so he said I wasn't. I havent been well for a few months nausea, loose bowels, fatigue, depression and losing weight. My gp did my bloods and I had raised liver enzymes so he ordered further bloods which were ok and I am waiting for an ultrasound scan of my liver. I have been looking into gastric antibodies and it says it can inhibit your use of vit b12 and also people who take ant acids long term which I do. Can my bloods be showing high levels of vit b 12 but my body not be using it properly and just shedding it? How can you find this out? I have ordered some methylcobalamin and methylfolate to try.