CPT® Code 82785

The CPT® Code 82785 refers to the laboratory test for measuring immunoglobulin E (IgE) levels in the blood or other body fluids, such as saliva or cerebrospinal fluid (CSF). Immunoglobulins, commonly known as antibodies, play a crucial role in the immune system by identifying and neutralizing pathogens like bacteria and viruses. This specific test is essential for diagnosing various medical conditions, including autoimmune diseases, allergies, and certain types of cancers such as multiple myeloma and macroglobulinemia. Elevated IgE levels are particularly associated with allergic reactions, as IgE antibodies react to allergens such as food, pollen, dander, and dust. The test may also be utilized to assess patients with recurrent infections to determine if they have low levels of immunoglobulin IgG, which is vital for fighting infections. The methodology for testing IgE levels varies based on the specimen type and the specific immunoglobulin being analyzed. It is important to note that while this code is specific to IgE determination, other immunoglobulin tests, such as IgA, IgD, IgG, and IgM, are reported using different CPT® codes. The accurate measurement of immunoglobulin levels is critical for effective diagnosis and treatment planning in various clinical scenarios.