The B6 in vitamins is not the active form. If you do not convert properly to P5P in the body (liver) the regular builds up.

The ranges are not given for people who have been supplementing. B6 can remain in the body for a while, so stopping just a day before doesn't really help.

There are also studies showing some autistic children have tested high even when NO vitamins have been given. That means they have some error in handling the B6.

You can switch to P5P version and see what happens.(dropping the vitamin you currently use).

But I also wonder what were your D levels? The actual numbers? Because lab ranges are reported as normal with very low bottom range.

Have you had a B12 serum? What were those numbers? Same problem, low numbers can be called "normal", when they are not.

For some nutrients, labs can just be confusing. There is a better way.... measuring the nutrients inside cells, and SpectraCell does this.
http://www.spectracell.com/

Labs for serum results are sometimes only useful when really really high (toxic) or really really low. All the inbetweens are guarded and hard to interpret.

I would be very difficult to get toxic on what you were taking.

This is an example of a popular P5P out there:
http://www.iherb.com/Now-Foods-P-5-P...blets/740?at=0