That early antigen to Epstein Barr Virus suggests a possible reactivation of the infection--unless it reflects an initial infection with the virus, though the IgM titer does suggest that you had an infection in the past.

The pattern of antibody results with Epstein Barr needs to be looked at closely, as EBV infection/reactivation has been associated with the onset of neuropathies (sometimes quite acutely). In essence, EBV has often been called "Every Body's Virus" as over 90% of us have been infected with by age 30. Most infections take place in early childhood and look like colds; somewhat older people (teenagers) who get it for the first time often get the classic "mononucleosis". But once in the body, the virus is immortalized in pharyngeal tissues of the nose/mouth/throat and while the body's immune system usually holds it is check--the reason that people who've been infected will have that IgG titer for life--sometimes if the immune system is compromised the virus will reactivate and make you miserable.

Take a look at:

http://labtestsonline.org/understand...ebv/tab/sample

http://www.mayomedicallaboratories.c...nit_code=84421

http://cclnprod.cc.nih.gov/dlm/testg...25705E006E59B8

On the other hand, that B12 result before supplementation is far too low, and low B12 levels can cause neuropathy symptoms all by themselves--in fact, low B12 has deleterious effects throughout the body of which neurological symptoms are only one aspect.

With that result, and the high C-reactive result, sound like there may also be some inflammatory process going on. Can you tell use what other test results you have received? You can also look through this--

www.lizajane.org

--to check on what tests you may have had and to track them (this chart was made up to be about as comprehensive a list of testing for neural symptoms we could all think of).