Serum or Plasma Concentration of Birch Pollen Allergen IgE (Birch Bet v 1)
This test measures the level of Immunoglobulin E (IgE) antibodies specific to the birch pollen allergen in your blood. IgE is a type of antibody that your immune system produces in response to certain allergens.
["Assessing your sensitivity to birch pollen through IgE levels can help diagnose allergies and guide treatment options."]
Key facts at a glance
- LOINC
- 102182-3
- Short code
- Silver Birch IgE RAST
- Synonyms
- Silver Birch 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 Does This Test Measure?
The test detects the presence of IgE antibodies that target proteins found in birch tree pollen. These antibodies are part of your immune system’s reaction to allergens, which can cause allergic rhinitis (hay fever), skin reactions, or other allergic symptoms when you come into contact with birch pollen.
Why Might You Need This Test?
Your healthcare provider may recommend this test if you suspect an allergy to birch pollen, especially if you experience symptoms like sneezing, itching, nasal congestion, or skin rashes during certain times of the year when birch trees are pollinating.
How Is the Test Performed?
A blood sample is taken from a vein in your arm. The sample is then sent to a lab where it is analyzed to measure the specific IgE antibodies against birch pollen. The test typically requires fasting, but this is not always necessary for IgE testing.
What Are Possible Results?
Results are reported as a numerical value representing the concentration of IgE antibodies in your blood. Higher levels may indicate a stronger allergic reaction to birch pollen, but this does not always correlate directly with the severity of symptoms.
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
IgE to Birch Pollen Allergen
Frequently asked questions
What does a positive result mean?
Can this test predict how severe my allergy will be?
Is this test covered by insurance?
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