Oligoclonal Band Panel (Cerebrospinal Fluid, Electrophoresis)

Why Is This Test Done?

Your healthcare provider may order this test if you have symptoms like memory loss, numbness, weakness, or other neurological issues that could suggest conditions such as multiple sclerosis, other demyelinating diseases, or infections like Lyme disease or neurosyphilis. It’s also used to monitor treatment responses in certain neurological disorders.

What Does the Test Involve?

A small amount of CSF is collected through a procedure called a lumbar puncture (spinal tap). The fluid is then sent to the lab for electrophoresis, a technique that separates proteins based on size and charge. The resulting pattern of bands is analyzed to detect oligoclonal bands.

What Are Oligoclonal Bands?

Oligoclonal bands are clusters of small, distinct protein bands seen on electrophoresis of CSF. These bands represent immunoglobulin G (IgG) fragments produced by immune cells in the central nervous system, often in response to inflammation, infection, or autoimmune processes.

What Conditions Might This Test Help Diagnose?

While not definitive on its own, elevated or abnormal oligoclonal bands can support a diagnosis of demyelinating diseases (like multiple sclerosis), certain infections, or other neurological conditions. They are not specific to any single disease but are often used alongside other tests and clinical findings.