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Most United States laboratories report a reference range of roughly 160 to 950 pg/mL, though exact figures differ between labs, so a result should be read against the range printed on your own vitamin B12 blood test report
Discuss your health history with your provider
Older people and people with digestive tract conditions are most at-risk for developing vitamin B12 deficiencies
Besides, you have absolutely no guarantee of what is in that vial
Oxygen availability driven trends in DOM molecular composition and reactivity in a seasonally stratified fjord
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