Cerebrospinal Fluid Protein Profile by Electrophoresis
This test measures the different types of proteins found in your cerebrospinal fluid (CSF), which surrounds your brain and spinal cord. It helps identify abnormalities that may indicate conditions like infections, inflammation, or neurological disorders.
["This test helps diagnose and monitor conditions affecting your brain and spinal cord by analyzing protein patterns in CSF."]
Key facts at a glance
- LOINC
- 109449-9
- Short code
- C pneum IgA Msmt CSF
- Synonyms
- C pneum IgA Msmt CSF
- Category
- chemistry
- Sample
- csf
- Container
- Sterile tube
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- CPT
- 82784
- Specimen volume
- 1-2 mL
- Stability
- Immediate analysis required, Refrigerated: 1h
- Hemolysis max
- 200
- TAT
- 4–24 hours
- Order
- routine
Why This Test Is Done
Your healthcare provider may order this test if you have symptoms such as headaches, neck stiffness, vision changes, or neurological issues. It’s also used to check for conditions like meningitis, multiple sclerosis, or tumors affecting the central nervous system.
How the Test Works
A small sample of your CSF is collected through a procedure called a lumbar puncture (spinal tap). The fluid is then analyzed using electrophoresis, a method that separates proteins based on size and charge to identify their presence and proportions.
What to Expect Before the Test
No special preparation is needed, but you may be asked to avoid certain medications or foods that could interfere with results. Inform your doctor about any allergies or conditions, especially bleeding disorders.
What to Expect During the Test
You’ll lie on your side with your back bent slightly. A needle is inserted into your lower back to collect CSF. You may feel pressure or a slight sting, but the procedure usually takes a few minutes. You’ll be asked to lie still afterward to prevent bleeding.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
CSF Protein Electrophoresis
Frequently asked questions
Abnormal protein patterns in CSF can signal underlying issues such as infections (e.g., bacterial or viral meningitis), demyelinating diseases (e.g., multiple sclerosis), or tumors. High levels of certain proteins may indicate inflammation or immune responses in the brain.
Normal results typically show balanced protein levels across different fractions, with specific patterns depending on age and health. Your results will be compared to your doctor’s expectations based on your symptoms and medical history.
Results are usually available within 1–3 business days, depending on lab processing times. Your doctor will discuss them with you during a follow-up visit.
Sources
- 1
- 2Lab Tests OnlineSource
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy