Hi all, I wondered if anyone could offer any advice on whether I could be B12 deficient with a normal serum B12 level? I have been trying to get to the bottom of my symptoms for about 10 years. My main symptoms are: general daily lerhargy/muscle weakness, chronic fatigue after exercise which includes brain fog, dizziness and palpitations (it's so bad that I just don't exercise any more), and problems with breathing and constantly having to take deep breaths. I also have problems with my bladder which is 'neurogenic' and doesn't empty properly, and I get nerve pains in my arms and legs, mainly at rest. And light periods/lack of libido.
My B12 was done recently which was 571.9 pg/ml (197- 771). I've been taking daily supplements for 6 years though as it was much lower than this at first. My ferritin was also at the lower end of the scale at the time. I've been recently diagnosed with Hashimoto's thyroiditis, but my thyroid levels are in the normal range and it recently went from being overactive and now back to normal again. I also did have a trial of thyroxine a few years back from a kind doctor, but it just seemed to make me feel as though I was going overactive, so I thought my symptoms can't be caused by the Hashimoto's...
Could anyone shed any light of what to do? I'm still under an endocrinologist aswell, so I could ask her for any more blood tests or to get referred to a different specialist maybe.
I will be grateful of any advice and what a wonderful forum!