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Filariasis Immunoglobulin G (IgG) Antibody, Serum

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

This test measures the level of Immunoglobulin G (IgG) antibodies in your blood that may indicate past or current exposure to filarial worms, which can cause parasitic infections like lymphatic filariasis.

Quick summary

["This test helps doctors assess potential exposure to filarial worms, which can cause serious health issues like elephantiasis or lymphatic obstruction."]

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

Key facts at a glance

LOINC
13245-6
Short code
Filaria IgM Ser-aCnc
Synonyms
Filaria IgM Ser-aCnc
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
CPT
82784
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

Why This Test Is Done

Your healthcare provider may order this test if you have symptoms of a filarial infection, such as swelling in the limbs, chronic skin changes, or if you live in or traveled to regions where filariasis is common. It can also be used as part of a screening or diagnostic evaluation for suspected parasitic infections.

What to Expect Before the Test

No special preparation is needed for this blood test. You may have a small needle inserted into your arm to draw blood, which usually takes a few minutes. You can resume your normal activities afterward.

What the Test Results Mean

Positive results suggest a history of exposure to filarial worms, but they do not always confirm an active infection. Higher antibody levels may indicate a stronger or more recent exposure. Consult your healthcare provider for interpretation of your specific results.

Common Causes of Positive Results

Positive IgG antibody levels are most commonly linked to past exposure to filarial worms. This can occur after infection has resolved or if the immune system is still responding to previous exposure.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

IgG Antibody to Filariasis

Frequently asked questions

How long does it take to get test results?
Test results are typically available within 1 to 3 business days, depending on your lab’s processing schedule. Your healthcare provider will contact you once results are ready.
Can I have a repeat test if my first result is inconclusive?
Yes, if your results are unclear or if you have ongoing symptoms, your doctor may recommend repeating the test or additional diagnostic procedures to better understand your health status.
Does this test detect an active infection?
No, this test measures antibodies, which indicate past exposure rather than an active infection. For diagnosing an active filarial infection, other tests or clinical evaluations may be needed.
  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