Why do my urinary B6 markers say I'm deficient if I'm supplementing and my plasma levels are high-normal? | Masterjohn Q&A Files #300
Short answer: Low or low-normal alkaline phosphatase may raise the plasma B6 level over the cellular level. Tryptophan metabolites in urine reflect the B6 requirement for the kynurenine pathway, and this requirement increases with more estrogen, more inflammation, or a higher protein intake.
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This snippet is from the July 13, 2022 AMA. The full recording and transcript is reserved for Masterpass members. Here is a preview of what’s included:
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