vitamin B6 testing?

[LazyMoose]

I was told by a functional MD that a regular B6 bold test is not accurate - it will not show a b6 to 5-p-5 conversion deficiency and only shows what is floating in your blood, which can "pool" if your dont convert it to the usable form

So your liver might not be converting it to the usable form but , per B6 test, you might think your over the range.

I've looked and asked around for a B6 test that shows whats converted or whats in the cells, but cant find out anything.

Know of such test?

[gymdandee]

http://ods.od.nih.gov/factsheets/VitaminB6-HealthProfessional/

[gymdandee]

B6 contains 5 or 6 compounds that work with the liver. b6 works with the liver to create enzymes that work with fat metabolism,protein. It works to  metabolizes the fat lipids.

Vitamin B6 is a water-soluble vitamin that is naturally present in many foods, added to others, and available as a dietary supplement. It is the generic name for six compounds (vitamers) with vitamin B6 activity: pyridoxine, an alcohol; pyridoxal, an aldehyde; and pyridoxamine, which contains an amino group; and their respective 5'-phosphate esters. Pyridoxal 5' phosphate (PLP) and pyridoxamine 5' phosphate (PMP) are the active coenzyme forms of vitamin B6 [1,2]. Substantial proportions of the naturally occurring pyridoxine in fruits, vegetables, and grains exist in glycosylated forms that exhibit reduced bioavailability.

[Paxiled]

Don't know the answer to this, maybe Gym does, but because B6 is water and not fat soluble I don't think the liver is where you're going to find most of it.  The liver will deal with it a bit, because some of it must cross the blood/brain barrier, but the liver is mostly responsible for fat soluble substances.  Gym, is this right?

[gymdandee]

http://www.raysahelian.com/pyridoxal5phophatep5p.html

[LazyMoose]

Note: Pyridoxal 5-Phosphate is just a regular B6 test I think, even though it sounds like a converted b6 test.