Cocklebur IgE (Immunoglobulin E) Level
This test measures your body’s immune response to cocklebur, a plant that may cause allergic reactions in some people. It helps identify if you have an allergy to this specific plant.
["This test helps diagnose plant allergies and guides allergy treatment planning."]
Key facts at a glance
- LOINC
- 102342-3
- Short code
- Cocksfoot IgE RAST
- Synonyms
- Cocksfoot IgE RAST
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Ref low
- 10
- Ref high
- 40
- Critical range
- — – 10000 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 Does This Test Measure?
Cocklebur IgE measures the amount of Immunoglobulin E (IgE) antibodies your body produces in response to cocklebur pollen or extracts. IgE is a type of antibody linked to allergic reactions, including skin rashes, itching, or respiratory symptoms.
Why Might You Need This Test?
Your healthcare provider may recommend this test if you’ve had symptoms like sneezing, itching, hives, or difficulty breathing after exposure to cocklebur. It’s also used to confirm allergies before allergy shots (immunotherapy).
How Is the Test Performed?
A blood sample is taken from a vein in your arm. The blood is sent to a lab where it’s tested for specific IgE antibodies against cocklebur. The results help determine if you have an allergic reaction to this plant.
What Are Possible Results?
Results are qualitative (positive or negative) rather than numerical. A positive result suggests an allergic reaction to cocklebur, while a negative result indicates no detectable IgE antibodies to this allergen.
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.
Positive results indicate a potential allergy to cocklebur, which can guide avoidance strategies, allergy testing, or treatment with allergy immunotherapy. Negative results mean no allergic response to cocklebur is detected, but other allergens may still be a concern.
Short name
Cocklebur-Specific IgE
Frequently asked questions
What does a positive result mean?
How long does it take to get results?
Can I take anything before the test?
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