I have received an email back from Denise.
I asked how long I should be off the supplement before I could have the active B12 test, her reply was she did not know but said they can do the test anytime I wanted them too. I would rather have it when all the supplement is out of my system. I have not be using the Vit B12 spray now for a month, could anyone advise if this would now be O.K. to have the test, I think someone on here advised 2 months but I would rather have it soon if I can.
Many thanks browny