It will be interesting to see what your new results are and whether there is documented improvement that may, in fact, be related to B12 use.

Does it make a difference that the two tests are being done by different doctors...isn't this type of test somewhat subjective to interpretation?

I also thought that toxic neuropathies do usually improve over time in some cases...but I guess it depends on what the original toxic agent was and if permanent damage occurred. You do indicate that there might be "slight" improvement...so would it be safe to say that it hasn't progressed and gotten worse? That to me would also be a good reason to use B12...if it can halt progression.