Due to ongoing symptoms my Doctor recently ran a full blood test.
This came back that I was low in total B12 (140 in a range of 160 - 900) and low active B12 (23 - should be 35 at the lowest.)
I've battled for the past 2 - 3 years with mouth ulcers, vertigo, dizziness, tinnitus, nausea, clumsiness, fatigue etc. The list goes on. More recently (over the last month) I've suffered really bad memory loss, difficulty in concentration and severe 'brain fog.'
When the low result came Doctor suggested 5 B12 injections (one per week) and then to retest - I understand now that retesting will skew the result.
She did test for Parietal Cell antibodies before 1st injection though but this was negative. I have good diet so I cannot put the deficiency down to diet. Due to my ongoing symptoms I'm convinced it is PA - but is this possible with negative antibodies?
I'm just not sure what I should do next? Do I fight for more injections after the first 5? Do I ask for a referral to an immunologist?
Any advice would be most welcome.