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Showing results for tags 'B12'.
Hi Recently I've heard more and more about how B12 deficiencies cause/ exacerbate POTS symptoms. 4 years ago I had a slew of blood tests and my B12 levels were one of them - my level was 300. I've read a bit about this and it seems that this is definitely on the low end; however my doctor at the time said that it was all normal and back then I knew nothing about B12, so I nodded happily along. Now I am trying to get a B12 test and an intrinsic factor blocking antibodies test to test for pernicious anemia and it is a bit of a mess. The cardiologist says go for it, but they don't do that th