I have the elevated B6 finding as well. If your alkaline phosphatase (ALP or Alk Phos, aka tissue-nonspecific ALP or TNSALP) tends to run at the bottom of the normal range, like mine does, then it may be due to that.
But isn't it interesting to find several people here who have the same?
So the high B6 probably isn't reflecting an inability to use the B6. It's been shown in infants with actual frank hypophosphatasia and extremely elevated B6 levels due to deficient ALP that their tissue levels of B6 are actually pretty normal.
I can't even take 5mg of B6.