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Serum or Plasma Concentration of Birch Pollen Allergen IgE (Birch Bet v 1)

Published: August 9, 2026Updated: August 17, 2026

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.

Quick summary

["Assessing your sensitivity to birch pollen through IgE levels can help diagnose allergies and guide treatment options."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 17, 2026Editorial policy

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

Specimen: serum

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?
A positive result means your immune system has detected specific IgE antibodies against birch pollen. This suggests a possible allergic reaction, but symptoms alone do not always align with test results. Your doctor will discuss next steps based on your overall health and symptoms.
Can this test predict how severe my allergy will be?
This test can indicate whether you are allergic to birch pollen but does not predict the exact severity of your symptoms. Other factors, like exposure levels and individual immune responses, also play a role. Your doctor will consider this alongside your symptoms and medical history.
Is this test covered by insurance?
Whether this test is covered depends on your insurance plan and medical necessity. Check with your insurance provider or healthcare provider to confirm coverage details before scheduling the test.
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

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