Patients seeking B12 testing or treatment should consult their GP, who can arrange appropriate blood tests (serum B12, full blood count, folate, and if indicated, intrinsic factor and parietal cell antibodies) and prescribe treatment if deficiency is confirmed
Patients were assigned to either the proactive group, receiving DDAVP immediately upon diagnosis, or the reactive group, receiving DDAVP only if the serum sodium level tended to be overcorrected
This is not strictly necessary for a 28-day window under refrigeration, but it does not hurt
If you are experiencing a vitamin B12 deficiency symptoms may include tiredness, weight loss, and constipation
But remember the 28-day stability rule: once reconstituted, the solution should be used within 28 days
With a severe deficiency, it can honestly take months of maintenance shots before you feel completely better again