"I just got my lab work back and my vitamin b12 is up from 790 to over 2000 (too high to read) in a matter of six months. I originally had it tested because I was having tingling (paresthesia) in my left side of my back six months ago. It..."
"Thanks for your answer, however my vitamin b12 is normal. It is my vitamin B1 that is low. It was a plasma test, not a whole blood sample, and every online criteria, even from quest diagnostics, drugs.com, and a few others say that plasm..."
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