Serum Allergen-Specific Immunoglobulin E (IgE) by Immunoassay (Screening)
This test measures the level of Immunoglobulin E (IgE), a type of antibody that your body produces in response to allergens like pollen, dust, or certain foods. It helps identify if you may have an allergic reaction to specific substances.
["IgE testing can help determine potential allergies that may require further evaluation or treatment."]
Key facts at a glance
- LOINC
- 77727-6
- Short code
- XXX allergen BasoBnd Ab Qn
- Synonyms
- XXX allergen BasoBnd Ab Qn
- Category
- chemistry
- Sample
- whole-blood
- Container
- Lavender-top (EDTA)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- lhr
- Specimen volume
- 3 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h
- Hemolysis max
- 0
- Lipemia max
- 0
- Icterus max
- 0
- TAT
- 4–24 hours
- Order
- routine
What Does This Test Measure?
IgE is a protein produced by your immune system when it encounters allergens. Elevated IgE levels can indicate an allergic reaction, but they don’t always mean you’ll have symptoms. This test screens for IgE antibodies specific to common allergens, which can guide next steps for allergy testing or management.
Why Might You Need This Test?
Your healthcare provider may recommend this test if you have symptoms like sneezing, itching, rash, or difficulty breathing that suggest allergies. It can also be used before allergy treatments like immunotherapy to check for baseline IgE levels.
How Is the Test Performed?
A small blood sample is taken from your arm. The sample is sent to a lab where it’s analyzed using an immunoassay method to detect IgE antibodies specific to allergens. Results are typically available within a few days.
What Do My Results Mean?
Results show whether your IgE levels are elevated for certain allergens. A positive result means your body may be reacting to that allergen, but it doesn’t confirm an allergy without further testing. Your doctor will discuss results and next steps, such as allergy skin tests or elimination diets.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance: This test helps identify potential allergens that may trigger symptoms, supporting diagnosis and guiding treatment plans. While IgE levels can indicate a heightened immune response, they’re not definitive proof of allergy. Follow-up testing may be needed to confirm a diagnosis and tailor treatment options.
Short name
IgE Screening for Allergens
Frequently asked questions
What does a positive result mean?
How long does it take to get results?
Can I take anything special 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 16, 2026. · Read our editorial policy