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Cerebrospinal Fluid Protein (Total)

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

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

Quick summary

["Total protein in CSF can signal inflammation, infection, or structural issues in the central nervous system."]

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

Key facts at a glance

LOINC
19157-7
Short code
Tube # CSF
Synonyms
Tube # 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 Might Be Ordered

Your doctor may request this test if you have symptoms like headaches, neck stiffness, confusion, or neurological problems. It’s also used to diagnose or monitor conditions such as meningitis, multiple sclerosis, or brain tumors.

What to Expect Before the Test

You’ll receive a spinal tap (lumbar puncture) where a small needle is inserted into your lower back to collect CSF. The procedure is quick but may cause mild discomfort. No special preparation is needed, but inform your doctor about any medications you’re taking.

What the Results Mean

Elevated protein levels could indicate inflammation, infection, or blood leaking into the CSF. Lower-than-expected levels might suggest certain genetic disorders or rare conditions. Your doctor will interpret results in the context of your symptoms and medical history.

Common Conditions Affecting Results

Conditions like meningitis, encephalitis, or multiple sclerosis often show elevated CSF protein. Demyelinating diseases (e.g., Guillain-Barré syndrome) may also present with abnormal protein levels, though patterns vary.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

CSF Protein

Frequently asked questions

How long will it take to get my results back?
Results are typically available within 1–3 business days, depending on your lab. Follow-up with your doctor is needed to discuss findings fully.
Can I eat or drink before the test?
No special diet is required, but avoid caffeine or heavy meals 2 hours before the procedure to reduce discomfort. Hydration is fine.
Will the test hurt?
The needle insertion may cause a brief sting, but most patients describe it as mild. You’ll be awake but relaxed during the procedure. Ask your doctor about pain relief options if needed.
  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