Cerebrospinal Fluid Protein Electrophoresis (Icteric Sample)

Why This Test Might Be Ordered

Your doctor may recommend this test if you have symptoms like headaches, neurological issues, or if your CSF sample appears yellowish (icteric). Yellow samples can sometimes be due to bilirubin, which can interfere with standard protein analysis. This specialized test helps ensure accurate results by focusing on protein patterns regardless of color changes.

What to Expect Before the Test

No special preparation is needed. You’ll have a small needle inserted into your back to collect CSF, usually done in a hospital or clinic setting. If your sample is icteric (yellow), it may be due to bilirubin from liver issues or other conditions, not the test itself.

What the Test Measures

Electrophoresis separates CSF proteins into bands based on size and charge. This helps detect abnormal protein patterns, such as those seen in conditions like multiple myeloma, infections, or inflammatory diseases. The icteric appearance may affect the visual interpretation but not the underlying protein analysis.

Possible Conditions This Test Helps Diagnose

This test can help identify conditions affecting protein levels in CSF, such as: - Multiple myeloma (cancer of plasma cells) - Infections (e.g., meningitis) - Inflammatory or autoimmune diseases - Certain neurological disorders The icteric sample may suggest bilirubin interference, but the protein electrophoresis itself remains valid for detecting abnormalities.