If you are not having success in getting results from a local neurologist, then Mayo clinic is a way to get all of your tests and some answers in a short period of time. they will run many tests a day and before you leave at the end of the week you will have your results. I had my spinal tap results from there when I left, there was not a long wait.
If you have a thorough neurologist who is getting the tests and labs you need, then you may find that Mayo is just repeating tests you already had. But, then again a second opinion is always good.

I do find it interesting that so many of us with neuropathy seem to have anemia. I have done many searches and never found much information linking the two.