--most of the serological tests in that Latov/Quest listing should be done if you are suspected to have neuropathy that is not obviously from diabetes/impaired glucose tolerance, compression, toxic exposure, or other more "obvious" causes.

And, you are close enough to Latov's group to see him or other members of his group, in all likelihood--the Cornell-Weill Center for Peripheral Neuroapthy at Columbia/Cornell Medical center is where Latov practices, along with a number of other excellent clinician/researchers. Cornell/Weill is one of the world's leading centers of neuropathy research and testing.