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Cerebrospinal Fluid Total Protein Measurement

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

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

Quick summary

["A protein test in your spinal fluid can help diagnose or monitor neurological conditions."]

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

Key facts at a glance

LOINC
109450-7
Short code
C trach Ag Msmt CSF
Synonyms
C trach Ag 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, neurological problems, or signs of inflammation in the brain or spinal cord. It can also be part of investigations for conditions such as infections, tumors, or multiple sclerosis.

What to Expect Before the Test

No special preparation is needed. You’ll have a small needle inserted into your back to collect a small sample of cerebrospinal fluid. This is usually done in a hospital or clinic setting and may cause mild discomfort.

What the Results Mean

Elevated protein levels might suggest conditions like meningitis, brain tumors, or other inflammatory or infectious processes. Lower than expected levels could indicate certain genetic disorders or bleeding into the spinal fluid.

Common Conditions Monitored

This test is often used to diagnose or monitor conditions such as Guillain-Barré syndrome, multiple sclerosis, or infections like encephalitis.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

CSF Total Protein

Frequently asked questions

What causes abnormal protein levels in CSF?
Abnormal protein levels can result from infections (e.g., bacterial or viral meningitis), autoimmune diseases (e.g., multiple sclerosis), brain tumors, or other conditions affecting the brain’s protective barrier. Always discuss your results with your healthcare provider.
How long does it take to get results?
Results are typically available within a few days to a week, depending on your lab and healthcare provider. Follow-up may be needed to clarify findings.
Is there anything I should avoid before the test?
No specific restrictions apply, but inform your doctor about any medications or conditions that might affect the test, such as recent infections or bleeding disorders.
  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