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As the solution contains 0.9% benzyl alcohol as a bacteriostatic preservative, the risk of microbial contamination in the vials is minimal
The final concentration is 1 mg per ml
Often, the next test is serum methylmalonic acid (MMA), a functional marker of B12 deficiency that's produced when there's not enough active vitamin B12 present
Vitamin B12, also known as cobalamin, is a water-soluble vitamin that your body needs for many key functions
Feb 21, 2007.
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