Cerebrospinal Fluid Total Protein by Electrophoresis
This test measures the total protein levels in your cerebrospinal fluid (CSF) using electrophoresis, a method that separates proteins based on size and charge. It helps identify abnormalities in protein distribution that may indicate conditions like infections, inflammation, or neurological disorders.
["Assessing protein patterns in CSF to diagnose or monitor potential neurological issues."]
Key facts at a glance
- LOINC
- 38865-2
- Short code
- RFA Carot a+Cereb a.ext-L Vs W contr IA
- Synonyms
- RFA Carot a+Cereb a.ext-L Vs W contr IA
- Category
- liver
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- rf-angio
- CPT
- 86430
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
Why This Test Is Done
Your healthcare provider may order this test if you have symptoms like headaches, neck stiffness, confusion, or neurological problems. It can also be used to monitor conditions such as multiple sclerosis, meningitis, or brain tumors. Sometimes, it’s part of a broader evaluation for unexplained neurological symptoms or after a head injury.
What to Expect Before the Test
You’ll likely have a lumbar puncture (spinal tap) performed, where a small needle is inserted into your lower back to collect CSF. The procedure is usually quick but may cause mild discomfort. No special preparation is needed, but inform your doctor about any medications you’re taking.
What the Test Results Mean
Normal results show a balanced distribution of proteins, while abnormal patterns may reveal elevated or fragmented proteins. For example, high protein levels could suggest inflammation or infection, while unusual bands might indicate conditions like Guillain-Barré syndrome or certain tumors.
Common Conditions This Test Helps Diagnose
This test can help diagnose or evaluate conditions such as meningitis, encephalitis, multiple sclerosis, subarachnoid hemorrhage, or certain types of brain tumors. It may also be used to monitor treatment progress or rule out other neurological disorders.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance: How This Test Contributes to Diagnosis
Short name
CSF Protein Electrophoresis
Frequently asked questions
How is CSF protein electrophoresis different from a general protein test in blood?
Can this test detect early signs of neurological diseases?
What should I do if my test results show abnormal protein levels?
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