Some useful tests that might give you an indication your immune function is abnormal toward CFS/ME are"
Quest Diagnostics Nichols Institute
http://www.nicholsinstitute.com/TestDetail.aspx?TestID=1487
Lymphocyte Subset Panel 1 7197X
Includes: Absolute Lymphocytes, Absolute CD3, Percentage CD3, Absolute CD4, Percentage CD4, Absolute CD8, Percentage CD8, CD4/CD8 Ratio (calculated), Absolute CD16/56, Percentage CD16/56, Absolute CD19, Percentage CD19
PLUS
http://www.nicholsinstitute.com/TestDetail.aspx?TestID=2742
Natural Killer Cell Functional Assay, FC
Natural Killer (NK) cells, a component of the cell-mediated arm of the immune system, mediate destruction of some types of tumor cells and virus-infected cells. Decreased NK cytotoxicity is associated with impaired immune surveillance, and may explain a predisposition to malignancy and viral infections.
PLUS
Labcorp Immunoglobulin G, Subclasses (1-4)
IgG Subclasses
IgG1,2,3,4
There are four subtypes, of which IgG1 and IgG2 comprise 85% of the total. IgG1 and IgG3 fix complement best; IgG3 is hyperaggregable and effects serum viscosity disproportionately.
IgG antibody responses to certain antigens occur to a greater extent in one type of IgG subclass than another. Therefore, some patients with normal total IgG levels may have problems with pyogenic infections because they do not produce IgG2 or combinations of IgG2, IgG3, and/or IgG4. Some clinically significant IgG subclass deficiencies occur in patients who have IgA deficiency.
The four subclasses of IgG differ in the constant regions of their heavy chains. A patient may have a normal total IgG yet still have a significant decrease in one subclass. IgG1 deficiencies are associated with EBV infections, IgG2 with sinorespiratory infections and infections with encapsulated bacteria, IgG3 with sinusitis and otitis media, and IgG4 with allergies, ataxia telangiectasia, and sinorespiratory infections. See tables in individual subclass listings.