Cvb5abmsmtcsf

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

This test detects antibodies against Coxsackievirus B5 in the cerebrospinal fluid to help diagnose viral infections affecting the brain and spinal cord.

Quick summary

{"The test looks for immune response to Coxsackievirus B5 in cerebrospinal fluid","It helps doctors diagnose viral meningitis, encephalitis, or other nervous system infections","A sample of cerebrospinal fluid is collected through a lumbar puncture (spinal tap)","Positive results indicate the body is fighting a Coxsackievirus B5 infection","Results help distinguish viral from bacterial infections for proper treatment"}

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

Key facts at a glance

LOINC: 109467-1
Short code: CVB5 CSF
Synonyms: CV B5 Ab Msmt CSF
Category: cardiac
Sample: csf
Container: Sterile CSF collection tube (polypropylene or glass), typically a plain red-top or clear tube. Avoid using tubes with preservatives or anticoagulants.
Units: N/A
Ref low: 0
Ref high: 8
Fasting: false
Population: adult
Sex: all
Age range: ≥ 0 years
Method: Enzyme Immunoassay (EIA) or Immunofluorescence Assay (IFA)
CPT: 86658
SNOMED: 371949004
Specimen volume: 1-2 mL of CSF is typically sufficient for antibody testing. A minimum of 0.5 mL may be acceptable depending on the laboratory's methodology.
Stability: CSF should be transported to the laboratory immediately after collection. If testing is delayed, store at 2-8°C for up to 24-48 hours. For longer storage, freeze at -70°C or below. Avoid repeated freeze-thaw cycles.
Hemolysis max: 200
TAT: 48–168 hours
Order: routine

What is this test?

The Coxsackievirus B5 antibody test is a laboratory test that detects whether your immune system has produced specific antibodies against Coxsackievirus B5, a type of enterovirus. The test is performed on cerebrospinal fluid (CSF), the clear liquid that surrounds and protects your brain and spinal cord. This test helps your healthcare provider determine if a Coxsackievirus B5 infection is affecting your central nervous system.

Why is this test performed?

Your doctor may order this test if you have symptoms suggesting a nervous system infection, such as severe headache, fever, neck stiffness, sensitivity to light, confusion, or seizures. The test helps identify whether Coxsackievirus B5 is the cause of your symptoms, which is important because treatment differs for viral versus bacterial infections. While Coxsackievirus B is more commonly associated with heart infections (myocarditis), the CSF antibody test checks specifically for neurological involvement.

How is the sample collected?

The sample is collected through a procedure called a lumbar puncture, commonly known as a spinal tap. A healthcare provider inserts a thin needle between the bones in your lower back to extract a small amount of cerebrospinal fluid. The area is numbed with local anesthetic to minimize discomfort. The procedure usually takes about 15-30 minutes, and you may be asked to lie flat for a short time afterward to reduce the chance of a headache.

What do the results mean?

If the test result is positive, it means antibodies against Coxsackievirus B5 were detected in your cerebrospinal fluid, indicating that your body is or recently was fighting a Coxsackievirus B5 infection affecting your nervous system. A negative result suggests no evidence of Coxsackievirus B5 infection in the central nervous system, though it does not completely rule out infection if the test was done early in the illness. Your doctor will interpret these results alongside your symptoms, other test results, and clinical findings to make an accurate diagnosis.

Reference range

Negative or titer <1:8. Positive results indicate presence of Coxsackievirus B5-specific antibodies in CSF, suggesting recent or past infection involving the central nervous system.N/A

Specimen: csf

No special preparation required. Patient should be informed of the lumbar puncture procedure and consented appropriately. Routine CSF collection precautions apply.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Frequently asked questions

Is a lumbar puncture painful?

The procedure involves some discomfort because it requires inserting a needle into the spine. However, the area is numbed with local anesthetic, which significantly reduces pain during the procedure. You may feel some pressure or a brief sting when the needle enters. After the procedure, you may have mild soreness at the injection site, and some people develop a headache that typically resolves with rest and hydration.

How long does it take to get results?

Results from antibody tests typically take 1-3 days, depending on the laboratory. More specialized testing or the need to confirm results may take longer. Your healthcare provider will discuss the timeline with you and schedule a follow-up appointment to review your results.

Do I need to prepare for the test?

No special preparation is typically required for this test. However, you should inform your doctor about all medications you are taking, especially blood thinners, as these may increase the risk of bleeding during the lumbar puncture. Tell your doctor if you have any bleeding disorders, recent infections, or if you might be pregnant.

What is the difference between IgM and IgG antibodies?

IgM antibodies are the first antibodies your body produces when fighting a new infection and typically appear within the first week. IgG antibodies develop later and provide long-term immunity. The test may detect one or both types, helping your doctor understand whether the infection is recent (IgM positive) or past (IgG positive). Your healthcare provider interprets these patterns in context of your symptoms.

Is Coxsackievirus B5 the same as hand, foot, and mouth disease?

No, Coxsackievirus B5 is different from the viruses that cause hand, foot, and mouth disease (usually Coxsackievirus A16 or Enterovirus 71). Coxsackievirus B strains are more commonly associated with pleurodynia (pain in the chest muscles), myocarditis, and meningitis, while Coxkackievirus A strains typically cause the oral and skin lesions of hand, foot, and mouth disease.

Sources

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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