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Cerebrospinal Fluid (CSF) Protein Content (Mass Concentration)

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

This test measures the total protein levels in your cerebrospinal fluid, which is the fluid surrounding your brain and spinal cord. It helps assess conditions affecting the central nervous system.

Quick summary

["CSF protein levels can indicate inflammation, infection, or other neurological issues."]

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

Key facts at a glance

LOINC
109817-7
Short code
HTLV I+II Ab Msmt CSF
Synonyms
HTLV I+II 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 Is This Test Done?

Your healthcare provider may order this test to investigate symptoms like headaches, neurological deficits, or signs of conditions such as meningitis, multiple sclerosis, or brain tumors. It can also help diagnose or monitor certain autoimmune diseases or infections in the central nervous system.

What to Expect Before the Test

No special preparation is usually needed. You may be asked to lie down on your side with your head slightly elevated. 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 Happens During the Test?

The collected CSF sample is then analyzed in a lab to determine the protein concentration. The results are compared to standard reference ranges to identify any abnormalities.

What Are Possible Results?

Higher-than-normal protein levels in CSF can suggest conditions like multiple sclerosis, Guillain-Barré syndrome, or certain infections. Lower-than-normal levels might indicate conditions such as hydrocephalus or certain genetic disorders. Results can vary based on individual health and specific medical conditions.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

CSF Protein

Frequently asked questions

How long does it take to get my test results?
CSF protein test results are typically available within 1 to 3 business days, depending on your lab’s processing schedule. Your healthcare provider will contact you once the results are ready.
What does it mean if my CSF protein level is high?
A high CSF protein level can indicate several conditions, such as inflammation, infections (like meningitis), or neurological diseases (like multiple sclerosis). Your doctor will discuss your symptoms and other test results to determine the exact cause and next steps.
Can lifestyle changes affect my CSF protein levels?
There are no specific lifestyle changes that directly affect CSF protein levels, as this test measures fluid from the central nervous system. However, managing underlying conditions (like infections or autoimmune diseases) with prescribed treatments can help address any related issues.
  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