Q&A: How does plasma exchange treat MS?

Plasma exchange refers to the procedure in which the vein of the MS patients is connected to the plasma exchange machine. The machine separates plasma from the blood, and removes antibodies from plasma. This practice is not commonly used, as antibodies are yet proved to be the only component in causing myelin destruction in MS. This removal practie, however, is used in autoimmune diseases that antibodies have a crucial role, such as myasthenia gravis and GBS.