Skip to content

Cerebrospinal Fluid (CSF) Protein Content (Qualitative or Semi-Quantitative)

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

This test checks the protein levels in your cerebrospinal fluid (the fluid surrounding your brain and spinal cord). High protein levels may suggest conditions like inflammation, infection, or other neurological issues.

Quick summary

["Protein in CSF can signal potential brain or spinal cord problems."]

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

Key facts at a glance

LOINC
109749-2
Short code
ENA Scl70 Ab Msmt CSF
Synonyms
ENA Scl70 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 doctor may order this test if you have symptoms like headaches, neck stiffness, confusion, or neurological concerns. It helps identify conditions such as meningitis, multiple sclerosis, or other spinal fluid abnormalities.

How the Test Works

A small amount of cerebrospinal fluid is collected through a procedure called a lumbar puncture (spinal tap). The sample is then analyzed for protein content, often using qualitative or semi-quantitative methods to determine if levels are elevated or abnormal.

Sample Collection and Preparation

The fluid is drawn from your spine using a needle inserted into the lower back. The test does not require fasting or special preparation, but you may need to stay still for a short time afterward to avoid headaches.

What to Expect During the Procedure

You’ll likely feel a mild pinch when the needle is inserted, followed by a brief pressure sensation as fluid is removed. You may experience a temporary headache or mild discomfort afterward.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Elevated protein levels in CSF can indicate conditions like meningitis, Guillain-Barré syndrome, or tumors affecting the central nervous system. Low or normal levels are generally expected unless there is a known reason for concern.

Short name

CSF Protein Screening/Confirmatory

Frequently asked questions

What causes abnormal protein levels in CSF?
Abnormal protein levels in CSF can result from infections (like meningitis), inflammatory diseases, demyelinating disorders (such as multiple sclerosis), or other neurological conditions. Your doctor will consider your symptoms and test results to determine the cause.
How soon will I get my results?
Results are typically available within 1 to 3 business days, depending on lab processing times. Your doctor will discuss the findings with you during your follow-up visit.
Can I eat or drink before this test?
No special preparation is needed, including fasting. However, stay hydrated and avoid caffeine before the procedure to minimize discomfort.
  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