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Cerebrospinal Fluid (CSF) Protein Profile (Qualitative)

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

This test evaluates the composition of proteins in your cerebrospinal fluid, which may help identify abnormalities in the brain’s protective barrier or potential inflammatory/infectious processes.

Quick summary

["Assessing protein patterns in CSF can reveal issues like infections, blood in the brain, or neurological disorders."]

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

Key facts at a glance

LOINC
38385-1
Short code
C immitis Ag CSF Ql
Synonyms
C immitis Ag CSF Ql
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 such as severe headaches, neck stiffness, vision changes, or neurological concerns. It’s often used alongside other tests, like MRI or lumbar puncture, to diagnose conditions such as meningitis, multiple sclerosis, or brain tumors.

What to Expect Before the Test

You’ll typically have a small needle inserted into your lower back to collect CSF. The procedure is quick but may cause mild discomfort. Avoid heavy lifting or strenuous activity afterward to prevent complications.

What the Results Mean

Results may show elevated or altered protein levels, which can indicate inflammation, infection, or bleeding in the brain. Normal results suggest no obvious abnormalities in protein composition.

Common Conditions Linked to Abnormal Results

High protein levels in CSF can signal conditions like Guillain-Barré syndrome, multiple sclerosis, or certain infections. Low or normal levels are less concerning but may still prompt further investigation if symptoms persist.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

CSF Protein Screening

Frequently asked questions

Will I need to prepare for this test?
No special preparation is needed, but inform your doctor about any medications or conditions that could affect results, such as recent infections or blood thinners.
How long will it take to get my results?
Results are usually available within a few days to a week, depending on the lab and your healthcare provider’s workflow. Follow-up may be scheduled if additional testing is needed.
Can I drink alcohol before this test?
Avoid alcohol for 24 hours before the test, as it may influence protein levels in the CSF. Stick to clear liquids if thirsty, unless instructed otherwise.
  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