: Wormwood IgE Antibody, Serum
: This test measures immunoglobulin E (IgE) antibodies in serum that are specific to wormwood (Artemisia) pollen, helping to assess whether a person has an allergic sensitization to this common weed pollen.
[": A positive wormwood IgE result indicates allergic sensitization to wormwood pollen and must be interpreted alongside a patient's symptoms and exposure history."]
Key facts at a glance
- LOINC
- 102665-7
- Short code
- Wormwood IgE RAST
- Synonyms
- Wormwood IgE RAST
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Ref low
- 10
- Ref high
- 40
- Critical range
- — – 500 N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- rast
- CPT
- 84484
- SNOMED
- 302774002
- 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
: What This Test Measures
: The test measures the amount of IgE antibody in a blood (serum) sample that binds specifically to wormwood pollen proteins. IgE is the antibody class most closely linked to immediate allergic reactions, so its presence at detectable levels suggests the immune system has been sensitized to wormwood.
: Why It Is Ordered
: A clinician may order this test when a person has allergy-like symptoms—such as sneezing, nasal congestion, itchy or watery eyes, or wheezing—that occur during weed pollen seasons, particularly in late summer and fall. It can also help clarify which specific pollen is triggering symptoms when several allergens are possible.
: How the Test Is Done
: A small blood sample is drawn from a vein, usually in the arm, and sent to a laboratory. The serum is then analyzed for wormwood-specific IgE, often using an immunoassay method. No special preparation is typically required unless your clinician gives other instructions.
: What Results Mean
: Results are usually reported on a graded scale or in concentration units, but exact reference cutoffs vary by laboratory. A detectable or elevated level suggests sensitization to wormwood, while an undetectable result makes sensitization less likely. Results do not predict how severe symptoms will be and should be interpreted with your symptom history.
Reference range
Adult: 10-40 U/LN/A
No special preparation required. Avoid fatty meals before the test if possible.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
: Wormwood IgE
Frequently asked questions
: Does a positive result mean I am allergic to wormwood?
: Do I need to fast before this test?
: What is wormwood pollen and when is it present?
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 17, 2026. · Read our editorial policy