Please test the following: CBC (lymphocytes, monocytes, basophils, eosinophils, neutrophils) GGT, ALT, AST. Total Immunoglobulin E.
Comprehensive Stool Test for Parasites.
Calprotectin (This will show if there is inflammation in your gut)
Secretory IgA (Basically your first line of defence in your gut)
Of course all of this only applies if you have ruled out Low Testosterone, and Pituitary/Adrenal tumors. If you are like me and basically went from BEAST to crippled over night then do these^^