Cerebrospinal Fluid Protein Electrophoresis (Qualitative)

What Is Cerebrospinal Fluid Protein Electrophoresis Used For?

Cerebrospinal fluid (CSF) protein electrophoresis is primarily used to analyze the composition of proteins in your CSF. It separates proteins into bands based on their size and electrical charge, allowing doctors to detect unusual patterns that might suggest conditions such as inflammation, infections, or demyelinating diseases. This test can also help confirm diagnoses like multiple sclerosis, meningitis, or certain types of brain tumors.

How Is This Test Performed?

A small amount of CSF is collected through a procedure called lumbar puncture (spinal tap). The fluid is then sent to a lab, where it undergoes electrophoresis—a technique that separates proteins using an electric current. The resulting pattern of bands is compared to normal ranges to identify any abnormalities.

What Does the Test Result Mean?

The test result shows the distribution of proteins in your CSF, often presented as distinct bands. Abnormal patterns (e.g., high levels of certain proteins, unusual band shapes) may indicate conditions like multiple sclerosis (where immunoglobulin G bands appear), infections (e.g., elevated acute-phase proteins), or other neurological disorders. Your healthcare provider will interpret the results in the context of your symptoms and medical history.

Common Conditions This Test Helps Diagnose

This test is often used to diagnose or monitor conditions affecting the brain and spinal cord, such as multiple sclerosis, meningitis, encephalitis, or certain types of brain tumors. It may also help assess the severity of inflammatory or infectious processes in the central nervous system.