Hi

I had a comprehensive vitamin and mineral blood test a few weeks ago.

Everything came back normal except Vitamin B6 and K-1.

Vitamin B6 (pyridoxine) was 99 and normal reference range between 5 -20.

I did the test because i have been having Skin rashes, hives, sensitive reddish skin, dermotagrpahic uriticaria problems for last year.
They are recurring conditions with bad itching.

I do not understand how I got this high level. I used to take some vitamin C supplement that has 15 mg daily and a year ago a focus pill with 20 mg.
MY understanding these are very low levels to cause toxicity (> 200 mg daily).

My questions:

1) Vitamin B6 is water soluble. Why is not the body excreting that with urine?

2) MY understanding body uses active form of B6 (P-5-P) for metablic processes. Is there a different test
for P-5-P when requesting blood work? When i check with labs they tell me Vitamin B6 and P-5-P are the same.

3) Do I have B6 toxicity now and could this be causing all my skin issues.

4) Is it possible that my liver is not converting Pyridoxine to P-5-P and i have P-5-P deficiency?

5) What follow-up blood work shall I do to confirm this condition? IS there different test for p-5-P than pyridoxine?