I went to the doctor for shortness of breathe and chest pain. and I improved after I was injected with iron.Dr gave me folic acid &
vitamin C & iron tablets.on that day I did a blood test and heart test. The dr said my heart is fast.When I got the results I have high level of
Vitamin B12 and I continued to have a fast heart beat.but the doctor did not mention anything abt B12.I am concerned abt the it because the reference range is 148-738 pmol/L and my result is 1454.