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Those with plasma B12 levels above 813 pg/mL (600 pmol/L) had a 1.74 to 4.72 times higher risk of being diagnosed with cancer within one year compared to those with levels in the normal range
It may however take a few days or weeks (especially if addressing a B12 deficiency)
Quality control: Quality Control This step holds foremost importance in securing the sterility of formulation
In certain regions of the world, marginal or subclinical vitamin B 12 deficiency may be fairly common in other age groups as well, including children, premenopausal women, and pregnant women, primarily due to low intake of animal-source foods (reviewed in 5)
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