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Vitamin B6 is required for tryptophan metabolism, and with insufficient amounts, xanthurenic acid accumulates
Presented for research literature review only Docimo SG (2001)
the serum B12 concentration of a given person may be 240 pmol/l with one assay, and 440 pmol/l with a different assay There is also considerable variability with just one and the same serum B12 assay
A 90 (straight up/down) angle is needed with an IM injection to make sure the medication is released into muscle and not the fatty tissue
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