Prenatal causing vitamin b6 toxicity?

I have been having some crazy neurological symptoms these past two months and over the years. Went to the neurologist to get tested for a bunch of stuff and one of them was vitamin b6 which is the only thing that came back abnormal in my blood work at 50.6ng/mL. The thing is the only supplement I take with b6 is my prenatal.. I’m still breastfeeding. On the quest website it says not to take vitamin supplementation within 24hrs of the test which no one told me. I take my prenatal before bed around 8pm and then had my blood drawn the next morning around 8:30. Did this cause the false high positive or is it too high to be caused by that?