- Current use of immunosuppressive or immunomodulatory drugs (including systemic glucocorticoids, chlorambucil, cyclophosphamide, azathioprine, methotrexate, cyclosporine, mycophenolate, human immune globulin in excess of 0.2 g/Kg per month, any monoclonal antibody specific for any human leukocyte subset or cytokine, or any interferon preparation), except low-dose physiologic replacement glucocorticoid therapy (Less than or equal to 10 mg of prednisone or equivalent per day).