Coxsackievirus B6 Antibody Test, Cerebrospinal Fluid (CSF)

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

This laboratory test looks for antibodies to Coxsackievirus B6 in a sample of cerebrospinal fluid, the clear liquid that surrounds and protects your brain and spinal cord. Detecting these antibodies helps your doctor determine whether a Coxsackievirus B6 infection is affecting your brain or nervous system, which can support the diagnosis and treatment of serious conditions such as meningitis or encephalitis.

Quick summary

{"The test looks for immune response to Coxsackievirus B6 in spinal fluid","It helps diagnose viral meningitis, encephalitis, or nerve infections","A sample is collected via lumbar puncture (spinal tap)","Results help doctors determine if a viral infection is causing neurological symptoms","Positive results indicate past or current infection"}

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

Key facts at a glance

LOINC: 109466-3
Short code: CVB6 CSF
Synonyms: CV B6 Ab Msmt CSF
Category: cardiac
Sample: csf
Container: Sterile CSF collection tube (preferably sterile polypropylene tube)
Units: N/A
Ref low: 0
Ref high: 1
Fasting: false
Population: adult
Sex: all
Age range: 0–120 years
Method: Enzyme-linked immunosorbent assay (ELISA)
CPT: 86658
SNOMED: 371949004
Specimen volume: 1-2 mL of cerebrospinal fluid
Stability: Store at 2-8°C if testing within 24 hours; for longer storage, freeze at -20°C or -70°C. Avoid repeated freeze-thaw cycles.
Hemolysis max: 200
TAT: 48–168 hours
Order: routine

What is this test?

The Coxsackievirus B6 Antibody test is a laboratory test performed on cerebrospinal fluid (CSF), the clear fluid that surrounds the brain and spinal cord. This test detects specific antibodies (immunoglobulins) that your body's immune system produces in response to Coxsackievirus B6 infection. Coxsackievirus B6 is a type of enterovirus that can cause infections ranging from mild respiratory illness to more serious conditions affecting the heart and nervous system.

How is the sample collected?

The sample is collected through a procedure called lumbar puncture, also known as a spinal tap. A healthcare provider inserts a thin needle between the bones (vertebrae) in your lower back to extract cerebrospinal fluid. The area is numbed with local anesthetic to minimize discomfort. The collected fluid is then sent to a laboratory for analysis.

Why might I need this test?

Your doctor may order this test if you have symptoms suggesting a neurological infection, such as severe headache, fever, neck stiffness, confusion, or unexplained neurological symptoms. It is particularly useful when other tests have not identified the cause of your symptoms, or when doctors suspect a viral cause for meningitis or encephalitis.

Reference range

Negative: < 1:1 (no detectable Coxsackievirus B6 IgG/IgM antibodies in CSF); Positive: ≥ 1:1 (presence of Coxsackievirus B6 antibodies indicating current or prior infection)N/A

Specimen: csf

No special preparation required. Standard CSF collection procedure precautions apply. Inform patient of minor risks associated with lumbar puncture including headache, bleeding, or infection at puncture site.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Detecting Coxsackievirus B6 antibodies in CSF helps doctors diagnose viral infections of the central nervous system. A positive result indicates that the virus has potentially reached the nervous system and triggered an immune response. This information is crucial for guiding treatment decisions, as viral infections require different management than bacterial infections. Coxsackievirus B infections can sometimes lead to serious complications including myocarditis (heart muscle inflammation), meningitis, and encephalitis.

Frequently asked questions

Is this test painful?

The lumbar puncture procedure may cause some discomfort or pressure, but the area is numbed with local anesthetic. You may feel a brief sting and some soreness in your back afterward. The procedure is generally well-tolerated by most patients.

How long does it take to get results?

Results are typically available within a few days to a week, depending on the laboratory. The test requires specialized analysis to detect antibodies in the cerebrospinal fluid.

What do positive results mean?

A positive result suggests that you have or recently had a Coxsackievirus B6 infection that has affected your nervous system. Your doctor will interpret this result alongside your symptoms, physical examination, and other test results to determine the best course of treatment.

Are there any risks after the procedure?

After a lumbar puncture, you may experience a headache, back pain, or slight bleeding at the injection site. Serious complications are rare but can include infection or bleeding. Drinking plenty of fluids and resting after the procedure can help reduce the risk of headache.

Sources

1
Coxsackievirus Infections - MedlinePlusSource
2
Enterovirus Infections - CDCSource

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