My b12 has been 1500-2000 regardless if I took a supplement. When I stopped I think it actually went up. My neurologist did not seemed worried and just said to stop the b12 supp. Who knows though cause it is odd.
I would get an mri.
I understand when I have went through my many dc testing I want the test to show something concrete. Obviously not bad but some direction at least. How can one be treated properly otherwise.
Feel better