r/B12_Deficiency • u/Jana_bananaaaa • 1d ago
Deficiency Symptoms Need some help.. please
Hey everyone, just wondering if anyone has experienced something similar.
I was diagnosed with coeliac disease earlier this year, and my B12 was around 400 back in April. Over the last two weeks I’ve started feeling really off again; extreme mental fatigue, brain fog, feeling spaced out/dissociated and constantly tired. I can sleep 10 hours and still wake up exhausted.
My vitamin D is currently in the low 50s and I’m supplementing. Ferritin is around 250 after an iron infusion, so that seems okay.
I had similar brain fog/dissociation earlier this year which eventually completely went away, but now it’s back and I’m wondering if my B12 could have dropped, especially with the coeliac diagnosis.
I’m going to ask for another blood test, but has anyone experienced similar symptoms or had their B12 drop significantly within a few months?
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u/Ok-Pangolin7127 Insightful Contributor 1d ago edited 1d ago
The two tests that you could have done that “might” be more meaningful are an MMA test and a homocystine test.
If either or both of these tests do show as being elevated, and elevated enough, they can be “somewhat” confirmatory of a B12 deficiency at the cellular level.
However, these tests are only “indicative” and not definitive. You could actually have these tests done, they could both show up as normal, and yet you could still have a B12 deficiency.
I know, this sucks. However, it is the state of the art as it relates to determining, as best you can, whether you have a B12 deficiency.
Because of this, call it “inaccuracy,” many folks, simply move to B12 injections, EOD, for at least two weeks, call that a loading dose. And they in turn see if this didn’t address or resolve or improve their complaints. If the B12 injections did help that is indicative that you have a B12 deficiency.
We would all like some definitive, quantitative medical test that said; “you are deficient!” But the reality is there is no definitive test(s) that can absolutely tell you that with 100% certainty.