Mugwort-Specific IgE (nArt/v3) — Radioallergosorbent (RAST) Test, Qualitative
A qualitative blood test that detects IgE antibodies to mugwort, helping evaluate possible mugwort allergy.
["A positive result indicates mugwort sensitization, but allergy symptoms and exposure history are also needed to determine clinical relevance."]
Key facts at a glance
- LOINC
- 81968-0
- Short code
- Deprecated Mugwort (nArt v) 3 IgE RAST Ql
- Synonyms
- Deprecated Mugwort (nArt v) 3 IgE RAST Ql
- Category
- liver
- 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
- 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 is this test?
This test measures the presence of allergen-specific IgE antibodies to mugwort in a blood sample. Mugwort is a common weed pollen that can cause seasonal allergy symptoms.
Why might I need this test?
Your clinician may order this test if you have sneezing, watery eyes, nasal congestion, wheezing, or other symptoms associated with exposure to weeds or their pollen.
How is the test performed?
A laboratory test uses a blood sample to look for mugwort-specific IgE. RAST is an older name for an allergen-specific IgE immunoassay; some laboratories may use a different platform while reporting the same type of result.
How do I prepare for the test?
Fasting is usually not required. Follow your clinician or laboratory's instructions, and do not stop prescribed medicines unless your healthcare professional tells you to do so.
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.
A positive result shows that your immune system has produced IgE antibodies to mugwort, indicating sensitization. This may support a diagnosis of mugwort allergy when it matches your symptoms and exposure history, but it does not by itself prove that mugwort causes your symptoms. A negative result makes mugwort allergy less likely but does not completely exclude it.
Short name
Mugwort-specific IgE
Frequently asked questions
Does a positive result mean I am allergic to mugwort?
Can I have a mugwort allergy with a negative result?
What symptoms are associated with mugwort allergy?
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