Blood tests may be performed to rule out various disorders such as systemic lupus erythematosus, HIV infection,  vitamin B12 deficiency, and many others  A blood test for NMO, called NMO-IgG, is also necessary. In some patients with<unk>  myelitis, the cerebrospinal fluid that bathes the spinal cord and brain contains more protein than usual and an increased number of leukocytes (white blood cells).  A spinal tap may be performed to obtain fluid to study these factors, exclude infections, and to look for markers of diseases such as MS.
Transverse myelitis laboratory findings
Neuralgia laboratory findings
Multiple sclerosis laboratory findings
Central pontine myelinolysis laboratory findings
Amyotrophic lateral sclerosis physical examination
Adrenoleukodystrophy laboratory findings
Otalgia laboratory findings
Acute disseminated encephalomyelitis laboratory findings