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Regional Allergen Immunoassay (Screening) for IgE Antibodies

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

This test measures your body’s immune response to common allergens, detecting IgE antibodies that may trigger allergic reactions.

Quick summary

["Identifies potential allergens linked to allergic symptoms like hives, itching, or breathing difficulties."]

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

Key facts at a glance

LOINC
82103-3
Short code
Region Allerg Mix1 IgE Qn
Synonyms
Region Allerg Mix1 IgE Qn
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
multidisk
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 This Test Measures

The test checks for IgE antibodies against a mix of regional allergens, including common environmental triggers like pollen, dust mites, pet dander, or mold. IgE antibodies are part of your immune system’s reaction to substances it perceives as harmful.

Why It’s Done

Your doctor may recommend this test if you have symptoms like sneezing, itchy skin, wheezing, or other signs of allergies. It helps pinpoint specific allergens to guide treatment plans, such as avoiding triggers or using allergy medications.

Sample Collection and Process

A blood sample is drawn from your arm, and the serum is analyzed using an immunoassay method to detect IgE antibodies against the included allergens. Results are typically available within a few days.

What to Expect Before the Test

No special preparation is needed, but inform your doctor about any medications (especially blood thinners) or recent illnesses that might affect results.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Positive results indicate a heightened immune response to specific allergens, supporting a diagnosis of allergy. This can help tailor treatment, such as allergy immunotherapy (allergy shots) or avoiding known triggers to reduce symptoms. Negative results mean no detectable IgE antibodies to the tested allergens, but further testing may be needed if symptoms persist.

Short name

IgE Allergen Panel (Screen)

Frequently asked questions

How long does it take to get results?
Results are usually available within 3 to 5 business days, depending on lab processing times.
Can I stop taking allergy medications before this test?
It’s best to avoid stopping allergy medications without consulting your doctor first, as they may affect test accuracy or symptom reporting.
Does this test cover all possible allergens?
No, this test includes a mix of regional allergens based on local prevalence. Additional testing may be needed for less common allergens.
  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