Skip to content

Cerebrospinal fluid (CSF) total protein concentration

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

This test measures the total amount of protein in your cerebrospinal fluid, which surrounds your brain and spinal cord. Protein levels can help diagnose conditions affecting the central nervous system.

Quick summary

["Protein in CSF may signal inflammation, bleeding, or other neurological issues."]

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

Key facts at a glance

LOINC
43061-1
Short code
C trach IgM Titr CSF
Synonyms
C trach IgM Titr CSF
Category
chemistry
Sample
csf
Container
Sterile tube
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
CPT
82784
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 recommend this test if you have symptoms like headaches, neck stiffness, confusion, or neurological problems. It’s also used to check for conditions such as meningitis, multiple sclerosis, or brain tumors.

What to Expect Before the Test

No special preparation is needed, but you may be asked to avoid certain medications or activities for a short time. You’ll have a small needle inserted into your lumbar spine to collect CSF, which is then sent for testing.

What the Results Mean

Normal results usually show low protein levels in CSF. Higher than expected protein levels may indicate inflammation, infection, or other neurological disorders. Your doctor will interpret results in the context of your symptoms and medical history.

Common Conditions Linked to Abnormal Results

Elevated protein levels can be seen in conditions like meningitis, Guillain-Barré syndrome, or certain types of brain cancer. Low protein levels are less common but may occur in rare cases of CSF leakage or certain genetic disorders.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

CSF protein testing is critical for diagnosing and monitoring conditions that affect the brain and spinal cord. High protein levels often point to immune responses or damage to the protective barrier around nerves, while abnormal patterns may guide treatment decisions.

Short name

CSF Protein Level

Frequently asked questions

What causes protein levels in CSF to be higher than normal?
Higher-than-normal protein levels in CSF can result from inflammation (e.g., meningitis), demyelinating diseases (e.g., multiple sclerosis), or bleeding into the spinal fluid. Certain infections, tumors, or autoimmune disorders may also contribute.
How is this test different from a blood protein test?
CSF protein tests measure protein specifically in the fluid surrounding the brain and spinal cord, while blood protein tests check protein levels in your bloodstream. CSF protein is often more sensitive for detecting neurological issues.
Can diet affect this test result?
Diet generally does not affect CSF protein levels, as the fluid is collected directly from the spinal column. However, avoid heavy physical activity or certain medications that might influence inflammation before the test.
  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