Hi. I've had symptoms of pernicious anemia for years. I've had low readings of b12 in the past around 190 but was just told to supplement. I want to get to the bottom of why I feel so bad and treat it. My symptoms are tingling in right hand, above my lip, and in my left leg. I have horrible brain fog and bad memory and feel very fatigued and tired. I supplemented b12 as I was told and retested and it was 425. Doctor didn't recommend anything else but I still feel terrible.
I want to ask my doctor for a more thorough work up to find out if this is what I indeed have. Where do I start? Are there more specific tests besides b12 alone? Thanks!
Edit: I also forgot to ask how long I need to stop taking b12 to get an accurate reading? I don't like to be off of it for too long because the tingling/burning gets bad.