Antigen IgE to *Nematoda* (e.g., *Anisakis* species) - Serum
This test measures your immune system’s response to parasitic worms, such as those from the *Anisakis* genus, which can sometimes infect the digestive tract or other organs. It helps identify if your body has produced antibodies against these organisms.
["This test may help diagnose infections or allergic reactions to certain parasitic larvae."]
Key facts at a glance
- LOINC
- 10919-9
- Short code
- ANISIGE
- Synonyms
- Anisakis IgE Qn
- Category
- chemistry
- Sample
- serum
- Container
- Serum separator tube (SST) or red-top tube with clot activator
- Units
- N/A
- Ref low
- 0.35
- Ref high
- 0.69
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- Immunoassay (Fluorescent Enzyme Immunoassay or Chemiluminescent Immunoassay)
- CPT
- 86003
- SNOMED
- 395112001
- Specimen volume
- 0.5-1 mL serum
- Stability
- Stable at room temperature for 8 hours; refrigerated (2-8°C) for 7 days; frozen (-20°C or below) for up to 30 days. Avoid repeated freeze-thaw cycles.
- Hemolysis max
- 100
- Lipemia max
- 100
- Icterus max
- 50
- TAT
- 24–72 hours
- Order
- routine
What This Test Measures
The test detects levels of Immunoglobulin E (IgE), a type of antibody your immune system produces in response to allergens or parasites. Elevated IgE levels toward *Anisakis* larvae may suggest exposure or an allergic reaction.
Why It’s Done
Your healthcare provider may order this test if you’ve experienced symptoms like stomach pain, nausea, vomiting, or allergic reactions (e.g., hives, swelling) after eating raw or undercooked seafood. It can also be used in research or specialized diagnostic settings for parasitic infections.
What to Expect
A blood sample will be drawn from a vein in your arm. You may feel a slight pinch, but it usually doesn’t cause discomfort. The test involves sending your serum to a lab for analysis.
Possible Results
Results can be either positive (indicating some immune response) or negative (no detectable IgE). High levels may suggest past exposure or an allergic reaction, but they don’t always confirm an active infection. Interpretation depends on clinical context.
Reference range
Negative: <0.35 kU/L; Equivocal: 0.35-0.69 kU/L; Positive: 0.70-3.49 kU/L; Strongly Positive: ≥3.50 kU/L. Reference values may vary by laboratory and assay manufacturer.N/A
No special preparation required. Patients should inform their healthcare provider of any antihistamine or corticosteroid use, as these may affect IgE levels.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance
Short name
IgE to Parasitic Larvae
Frequently asked questions
How often should I get this test?
What do elevated IgE levels mean?
Can this test detect active infection?
Sources
- 1
- 2Lab Tests OnlineSource
- 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 15, 2026. · Read our editorial policy