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A complete Certificate of Analysis should show an HPLC result with a single dominant peak at the stated purity, a mass-spectrometry result confirming the molecular weight matches the intended compound, a bacterial endotoxin result from the Limulus Amebocyte Lysate (LAL) assay, the batch or lot number, and the name of an independent testing laboratory with a recent date
Individuals with malabsorption conditions, severe deficiency, or those who havent responded to oral supplements typically benefit most from injections
Can vitamin B12 be harmful
Yu F, Qi S, Ji Y, Wang X, Fang S, Cao R
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