The main urinary metabolite of pyridoxine (Vitamin B6) and is a measure of recent dietary intake.
Low values of pyridoxic acid in the urine indicate low recent intake while high values indicate high recent dietary intake.
High pyridoxic acid indicates high recent intake of vitamin B6. Because some individuals may require very high doses of vitamin B6, high values do not necessarily indicate the need to reduce vitamin B6 intake.
Low values are associated with low B6 status, high oxalates, and/or low neurotransmitters.
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