poor nutrition or vegan diet) Transcobalamin II deficiency It is also used as part of the vitamin B12 absorption test (Schilling test)
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Mathew B, Amaechi C, Asante K, Albuquerque E, Benedict A, Kneeream E, Lopez L, et al
Store at or below 6 degrees Celcius protected from heat moisture and direct sunlight
If your B12 levels are low or high, you wont know the next steps to take
Contraindications include Lebers hereditary optic neuropathy, severe kidney disease, known cobalt or cobalamin allergy, and polycythemia vera