What is the most important purpose of electrophoresis?

What is the most important purpose of electrophoresis?

• A. Analysis of PCR products
• B. Oligoclonal bands in CSF
• C. Capillary Electrophoresis (CE)
• D. Semiquantitative drug screening test

Answer: (B)

Electrophoresis is a way to separate proteins, including immunoglobulins, so you can see their patterns. The most important clinical use is to detect oligoclonal bands in cerebrospinal fluid, which reflect IgG produced within the central nervous system. When these bands appear in CSF but not in serum, it signals intrathecal IgG synthesis, a finding that strongly supports conditions like multiple sclerosis in the right clinical setting. While electrophoresis can be used for other purposes, such as analyzing PCR products or applying different separation techniques, the CSF oligoclonal band pattern is the key diagnostic use in this context. Capillary electrophoresis is a method, not a purpose, and semiquantitative drug screening typically relies on other testing approaches.

Electrophoresis is a way to separate proteins, including immunoglobulins, so you can see their patterns. The most important clinical use is to detect oligoclonal bands in cerebrospinal fluid, which reflect IgG produced within the central nervous system. When these bands appear in CSF but not in serum, it signals intrathecal IgG synthesis, a finding that strongly supports conditions like multiple sclerosis in the right clinical setting. While electrophoresis can be used for other purposes, such as analyzing PCR products or applying different separation techniques, the CSF oligoclonal band pattern is the key diagnostic use in this context. Capillary electrophoresis is a method, not a purpose, and semiquantitative drug screening typically relies on other testing approaches.