Test Details: This test aids in diagnosis of CNS demyelinating disease or autoimmune encephalitis. The presence of myelin oligodendrocyte glycoprotein (MOG) antibody may be associated with neuromyelitis optica spectrum disorders including optic neuritis and transverse myelitis, brainstem encephalitis and acute disseminated encephalomyelitis. This test may be used in monitoring antibody persistence or treatment response in individuals who are antibody positive.