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Cerebrospinal Fluid (CSF) Total Protein by Immunoassay

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

This test measures the total protein content in your cerebrospinal fluid (the fluid surrounding your brain and spinal cord). Protein levels can help diagnose conditions affecting the central nervous system.

Quick summary

["Protein in CSF may indicate inflammation, infection, or other neurological issues."]

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

Key facts at a glance

LOINC
110923-0
Short code
Hu Ab Msmt CSF
Synonyms
Hu Ab Msmt CSF
Category
chemistry
Sample
csf
Container
Sterile tube
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
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 like headaches, neck stiffness, confusion, or neurological problems. It can also be used to monitor conditions such as meningitis, multiple sclerosis, or brain tumors.

What to Expect Before the Test

No special preparation is needed. You may be asked to lie down on an examination table, and a healthcare professional will insert a needle into your lower back to collect a small amount of CSF. You might feel a brief pinch or pressure during the procedure.

What to Expect During the Test

The procedure usually takes a few minutes. You may experience mild discomfort or a slight ache, but it’s generally well-tolerated. You’ll be asked to lie still during the collection.

What the Results Mean

Elevated protein levels in CSF can suggest conditions like infections (e.g., bacterial or viral meningitis), autoimmune diseases, or tumors. Lower-than-expected levels may indicate certain congenital disorders or rare metabolic conditions.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance: Elevated CSF protein levels are often associated with increased permeability of the blood-brain barrier, inflammation, or increased production of proteins within the central nervous system. This can help guide treatment for neurological disorders.

Short name

CSF Protein Level

Frequently asked questions

What causes abnormal CSF protein levels?
Abnormal CSF protein levels can result from infections (e.g., meningitis), autoimmune diseases (e.g., multiple sclerosis), brain tumors, or congenital disorders affecting protein metabolism. Always discuss your results with your healthcare provider.
How often should I get this test?
Frequency depends on your symptoms and medical condition. Your healthcare provider will determine the best timing based on your individual care plan.
Can lifestyle changes affect this test result?
Generally, lifestyle factors like diet or exercise do not directly influence CSF protein levels. However, certain medications or conditions may affect protein metabolism, so always inform your provider of any ongoing treatments.
  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