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Cerebrospinal Fluid (CSF) Test — Unspecified Analyte

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

A laboratory test performed on cerebrospinal fluid to measure or identify a specific substance. The analyte and testing method are not clear from the abbreviation provided.

Quick summary

["This test analyzes cerebrospinal fluid, the fluid surrounding the brain and spinal cord."]

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

Key facts at a glance

LOINC
69035-4
Short code
EEEV IgG+IgM Pnl CSF IF
Synonyms
EEEV IgG+IgM Pnl CSF IF
Category
liver
Sample
csf
Container
Sterile tube
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
if
CPT
82784
Specimen volume
1-2 mL
Stability
Immediate analysis required, Refrigerated: 1h
Hemolysis max
200
TAT
4–24 hours
Order
routine

What is this test?

Cerebrospinal fluid, or CSF, surrounds and cushions the brain and spinal cord. Laboratory testing of CSF can measure or identify substances associated with neurologic, inflammatory, infectious, or other medical conditions.

Why might I need this test?

A CSF test may be ordered to help evaluate symptoms such as severe headache, fever, neck stiffness, weakness, numbness, confusion, or seizures. The specific reason depends on the substance being tested and the person's symptoms and medical history.

How is the test performed?

A clinician generally obtains CSF with a lumbar puncture, also called a spinal tap. A needle is inserted into the space around the lower spinal cord, and a small amount of fluid is collected for laboratory analysis.

How do I prepare for the test?

Follow the instructions provided by the healthcare professional performing the lumbar puncture. Tell the clinician about medicines, allergies, bleeding problems, and any prior spinal or back procedures. Afterward, lying quietly and drinking fluids as directed may help reduce a post-lumbar-puncture headache.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

An abnormal CSF result may indicate an infection, inflammation, bleeding, immune activity, or another condition affecting the brain or spinal cord. The finding must be interpreted according to the specific analyte, method, symptoms, and other laboratory results. Results should be reviewed with the ordering clinician.

Short name

CSF test

Frequently asked questions

What is cerebrospinal fluid?
Cerebrospinal fluid is a clear fluid produced around the brain and spinal cord. It helps support and protect these tissues.
How is a CSF sample collected?
The sample is usually collected through a lumbar puncture, or spinal tap, using a needle placed in the lower back. Some tests may also be performed on a sample collected earlier.
Can I interpret the result without knowing the analyte?
No. A result has limited meaning without knowing exactly what was measured and the testing method used. Ask the ordering clinician for the specific test name and an explanation of the result.
  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