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Cerebrospinal Fluid (CSF) Total Protein by Electrophoresis

Published: August 9, 2026Updated: August 16, 2026

This test measures the total protein content in your cerebrospinal fluid (CSF), which is the fluid surrounding your brain and spinal cord. It helps assess conditions affecting the blood-brain barrier or protein balance in the CSF.

Quick summary

["Understanding your CSF protein levels can help diagnose or monitor neurological conditions."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
45002-3
Short code
C trach IgG CSF Ql
Synonyms
C trach IgG CSF Ql
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 doctor may order this test if you have symptoms like headaches, neurological issues, or signs of inflammation in the brain or spinal cord. It can also be part of investigations for conditions such as multiple sclerosis, infections, or tumors.

What to Expect Before the Test

No special preparation is needed. You may have a lumbar puncture (spinal tap) where a small amount of CSF is collected from your lower back. This procedure is usually done in a hospital setting and may cause mild discomfort.

What the Results Mean

Elevated protein levels in CSF might suggest conditions like infections, inflammation, or certain neurological diseases. Lower levels could indicate normal findings or other conditions that need further evaluation.

Common Conditions Monitored

This test helps diagnose or monitor conditions such as meningitis, encephalitis, multiple sclerosis, Guillain-Barré syndrome, or other disorders affecting the central nervous system.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

CSF Protein Profile

Frequently asked questions

What causes abnormal CSF protein levels?
Abnormal CSF protein levels can result from infections (like meningitis), autoimmune diseases (such as multiple sclerosis), tumors, or other inflammatory or degenerative conditions of the nervous system. Your doctor will consider your symptoms and other test results to determine the cause.
How often will I need this test?
The frequency of this test depends on your medical condition and treatment plan. Your doctor will advise you on how often to get retested based on your specific diagnosis and needs.
Can I eat or drink before this test?
No dietary restrictions are typically required for this test. However, follow your healthcare provider’s instructions if you have any specific instructions for the procedure, such as avoiding certain medications or activities.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

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.

Medical Disclaimer

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