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Chikungunya Virus IgA Antibody, Serum

Published: August 9, 2026Updated: August 15, 2026

This test detects antibodies specific to the chikungunya virus in your blood serum. It helps identify if your immune system has ever been exposed to the virus, which can cause severe joint pain and other symptoms after infection.

Quick summary

["This test may be used to diagnose past chikungunya virus exposure, especially in cases where symptoms persist or recur."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 15, 2026Editorial policy

Key facts at a glance

LOINC
95705-0
Short code
CHIKV-IgA
Synonyms
CHIKV IgA Spec Ql IA
Category
chemistry
Sample
serum
Container
Serum separator tube (SST) or red-top vacutainer tube; alternatively, serum collected in sterile cryovial for transport
Units
N/A
Ref low
7
Ref high
14
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
Enzyme-linked immunosorbent assay (ELISA) or chemiluminescent immunoassay (CLIA) for qualitative detection of IgA antibodies against Chikungunya virus
CPT
86790
SNOMED
122445000
Specimen volume
1-2 mL of serum (minimum 0.5 mL); 3-5 mL whole blood collected in SST
Stability
Serum stable at room temperature (15-25°C) for 8 hours; refrigerated (2-8°C) for 7 days; frozen (-20°C or lower) for up to 30 days. Avoid repeated freeze-thaw cycles. Hemolyzed or lipemic samples may yield inaccurate results.
Hemolysis max
200
Lipemia max
100
Icterus max
50
TAT
24–72 hours
Order
routine

What Does This Test Measure?

The test measures IgA antibodies, a type of immune protein produced by your body in response to a chikungunya virus infection. IgA antibodies are part of your immune system’s defense and can appear after the virus has cleared but may linger for months or years.

Why Might You Need This Test?

Healthcare providers may order this test if you have symptoms of chikungunya (such as persistent joint pain, fever, or rash) and recent travel to areas where chikungunya is common. It can also help confirm a diagnosis if other tests are inconclusive or if symptoms are unclear.

How Is the Test Performed?

A blood sample is drawn from a vein in your arm. The serum portion of the blood is then tested in a laboratory using an immunoassay method to detect chikungunya-specific IgA antibodies.

What Are Possible Results?

A positive result indicates the presence of IgA antibodies, suggesting past exposure to the chikungunya virus. A negative result means no detectable antibodies were found at the time of testing, which may or may not mean you were never exposed.

Reference range

Negative: No IgA antibodies detected. Positive: IgA antibodies detected, indicating recent or acute Chikungunya virus infection. Equivocal/Borderline: Result indeterminate; recommend repeat testing in 7-14 days.N/A

Specimen: serum

No special preparation required. Patients do not need to fast before sample collection. Patients should inform their healthcare provider of any recent travel to endemic areas (tropical/subtropical regions) and any vaccination history, as this information aids in result interpretation.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

IgA Antibody to Chikungunya Virus

Frequently asked questions

What Does a Positive Result Mean?
A positive IgA antibody result suggests you likely had a chikungunya infection at some point, even if symptoms were mild or unclear. This can be important for monitoring long-term effects or planning future travel to endemic regions.
What Does a Negative Result Mean?
A negative result means no IgA antibodies were detected in this sample, but it does not definitively rule out past exposure. Antibodies may take time to develop after infection, and their levels can fluctuate. Follow-up testing or additional questions about symptoms may be needed.
How Long Do IgA Antibodies Last?
IgA antibodies to chikungunya can persist for months to years after infection. Their duration varies among individuals, so they may remain detectable for an extended period even if symptoms have resolved.
  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 15, 2026. · Read our editorial policy