Coxsackievirus B1 Antibody Test, Cerebrospinal Fluid (CSF)
This test looks for antibodies that your body makes against Coxsackievirus B1 in a sample of cerebrospinal fluid, the clear liquid that surrounds and cushions your brain and spinal cord. It helps your doctor determine whether a Coxsackievirus B1 infection is causing symptoms that affect your central nervous system.
{"The test looks for immune response to Coxsackievirus B1 in the fluid surrounding the brain and spinal cord","It helps diagnose viral meningitis, encephalitis, or other CNS infections caused by this virus","A sample of cerebrospinal fluid is collected via lumbar puncture (spinal tap)","Results help doctors determine if a viral infection is causing neurological symptoms","Positive results suggest recent or past infection with this specific virus type"}
Key facts at a glance
- LOINC
- 109908-4
- Short code
- COXB1CSF
- Synonyms
- CV B1 Ab Msmt CSF
- Category
- cardiac
- Sample
- csf
- Container
- Sterile plastic or glass tube for CSF collection (typically 12 x 75 mm polystyrene tubes)
- 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
- 122442006
- Specimen volume
- 0.5-1.0 mL CSF minimum; 1.5-2.0 mL preferred for adequate testing
- Stability
- Room temperature: 24 hours; Refrigerated (2-8°C): 72 hours; Frozen (-20°C or below): several weeks to months. Avoid repeated freeze-thaw cycles.
- Hemolysis max
- 200
- TAT
- 48–120 hours
- Order
- routine
What is this test?
The Coxsackievirus B1 Antibody test measures the presence of specific antibodies (IgM and IgG) against Coxsackievirus B1 in the cerebrospinal fluid (CSF). Cerebrospinal fluid is the clear liquid that surrounds and cushions the brain and spinal cord. This test helps doctors determine if neurological symptoms are caused by a Coxsackievirus B1 infection.
How is the sample collected?
The sample is collected through a procedure called a lumbar puncture, also known as a spinal tap. A healthcare provider inserts a thin needle into the lower back to withdraw a small amount of cerebrospinal fluid. The area is first numbed with local anesthesia to minimize discomfort. The procedure typically takes about 15-30 minutes.
Why might I need this test?
Your doctor may order this test if you have symptoms suggesting a central nervous system infection, such as severe headache, fever, neck stiffness, sensitivity to light, confusion, or seizures. Coxsackievirus B1 is part of the enterovirus family and can cause viral meningitis, encephalitis, and other neurological complications.
What do the results mean?
A positive result indicates that antibodies against Coxsackievirus B1 were detected in your cerebrospinal fluid, suggesting an infection with this virus. IgM antibodies typically appear early in infection and indicate a recent or active infection. IgG antibodies develop later and may indicate past exposure. Your doctor will interpret these results along with your symptoms and other test findings.
Is the test safe?
The lumbar puncture procedure is generally safe, though some people may experience mild discomfort, headache, or bruising at the puncture site. Serious complications are rare but can include infection, bleeding, or nerve damage. Your healthcare team will take precautions to minimize risks.
Reference range
Negative (<1:4 titer or <10 AU/mL); Positive results indicate intrathecal antibody production suggestive of Coxsackievirus B1 infection affecting the central nervous systemN/A
No specific patient preparation required. CSF collection via lumbar puncture is performed by trained healthcare provider. Inform patient of risks associated with lumbar puncture including headache, bleeding, or infection.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Coxsackievirus B1 is a type of enterovirus that can cause significant neurological complications. Detection of specific antibodies in CSF helps differentiate viral from bacterial meningitis, guide treatment decisions, and confirm the causative organism. While often associated with cardiac complications (myocarditis, pericarditis), when found in CSF, it indicates central nervous system involvement requiring specific management. This test is particularly valuable when other common causes of meningitis have been ruled out.
Frequently asked questions
How long does it take to get results?
Do I need to fast before this test?
What happens if the test is negative?
Can this infection be treated?
Is Coxsackievirus B1 contagious?
Sources
- 1CDC - EnterovirusesSource
- 2
- 3
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.
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