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An alarming or concerning B12 level is below 200 picograms per milliliter (pg/mL)
A standard curve is constructed, and the active ingredient content is quantified by peak area
If youve shaken it vigorously, the integrity of the compound may be compromised, and for the sake of data accuracy, it may be best to discard it
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The stomach needs sufficient stomach acid to retrieve the vitamin from the protein
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