Last year my B12 was 226, but with treatment [ sublinguals ] it went up to 2000.
Since then I have been rather complacent and have only been taking them sometimes, or when I think about them as I was feeling fine, however I recently have been having.....tingling in the feet,arms, hands and head, I'm really tired, and have palpitations.
I requested a blood test and collected the result today
B12 is 827 [ 197-866 ]
folate is 19 [ 4.6 - 18.7 ]
These results are within range, and was told no further action/treatment required.
Perhaps I should go back to taking the sublingual at 5mgs per day ?