Skip to content

Serum Allergen-Specific Immunoglobulin E (IgE) Quantification by Immunoassay

Published: August 9, 2026Updated: August 16, 2026

This test measures the amount of Immunoglobulin E (IgE) antibodies your body produces in response to specific allergens, such as pollen, dust mites, or pet dander.

Quick summary

["Helps identify which allergens may trigger allergic reactions in your body."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
7454-2
Short code
Ltx Stallerg BasoBnd Ab Qn
Synonyms
Ltx Stallerg 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 This Test Measures

IgE antibodies are a type of antibody your immune system produces when it reacts to allergens. This test detects the concentration of IgE directed specifically toward common allergens like grasses, trees, molds, or animal proteins. The results help doctors determine if you have an allergic sensitivity to these substances.

Why It’s Ordered

Your healthcare provider may recommend this test if you have symptoms like sneezing, itching, rash, or difficulty breathing that suggest an allergic reaction. It’s often used alongside a skin prick test or other allergy assessments to confirm or refine allergy diagnoses.

Sample Collection and Preparation

A blood sample is drawn from a vein in your arm. The serum portion of the blood is separated and sent to a lab for testing using an immunoassay method, which detects IgE antibodies against specific allergens.

What to Expect Before the Test

No special preparation is needed for this test. However, if you’re taking certain medications (like antihistamines), your provider may advise stopping them for a few days before testing to avoid false results.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

IgE to Specific Allergens

Frequently asked questions

Your doctor may use these results to confirm allergies, guide treatment plans (like allergy shots or medication), or monitor your response to allergy management strategies. High IgE levels to specific allergens strongly suggest an allergic reaction risk.
This test does not replace a clinical diagnosis by a healthcare provider. Results should always be interpreted in the context of your symptoms and medical history.
How long will I need to wait for results?
Results are typically available within 24 to 72 hours, depending on your lab’s processing schedule. Your healthcare provider will discuss the findings with you during your follow-up visit.
Can I eat or drink before this test?
Yes, you can eat and drink normally before this test. Unlike some blood tests, fasting is not required for IgE allergy testing.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

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.

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 16, 2026. · Read our editorial policy