b12 injection in the stomach Shot: What Every Human Needs to Know About Injectable Vitamin B12 How to self-inject intramuscular vitamin

For a deeper dive into the science, you can read the full research on B12 diagnostic thresholds

A couple of 'things'': it is possible to have anaemia and haemochromotis at the same time (though you don't have a low Hb), there are conditions called iron out of balance and functional iron deficiency (associated with low or dropping ferritin), which can be caused by autoimmune disease, PA, absorption problems, coeliac disease, absorption problems and issues to do with gene mutations (HFE gene, mutations C282Y, H63D, and S65C) - and many other things as well

This discrepancy may be related to the finding that Be(2)-C cells are more resistant to treatment and undergo apoptosis at a later time point

Consult with a medical professional on which parts of your body you should use as injection sites