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Regional Allergen Mix 2 IgE Antibodies, Qualitative

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

A blood test that checks for IgE antibodies to a group of allergens commonly found in a particular geographic region.

Quick summary

["A positive result suggests allergy sensitization to one or more allergens in the regional mixture."]

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

Key facts at a glance

LOINC
15257-9
Short code
Region Allerg Mix2 IgE Ql
Synonyms
Region Allerg Mix2 IgE Ql
Category
liver
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 is this test?

This test measures IgE antibodies in blood to a mixture of allergens associated with a specific region. It helps identify whether your immune system has become sensitized to any allergens in that mixture.

Why might I need this test?

It may be used to evaluate suspected environmental allergies when the specific triggers are unclear. It can be especially useful when symptoms occur in a particular region or during certain seasons.

How is the test performed?

A blood sample is collected and analyzed for IgE antibodies against the regional allergen mixture. The result is reported as negative or positive, and the laboratory may provide details about the individual allergens included.

How do I prepare for the test?

No fasting or special preparation is usually required for this blood test. Tell your clinician about your symptoms, possible exposures, allergies, and any medicines you are taking.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

A positive result indicates that the immune system has produced IgE antibodies to one or more allergens in the regional mixture, suggesting sensitization. This may occur with allergy symptoms, but it does not by itself confirm that a particular allergen is causing them. Results should be interpreted alongside your exposure history, symptoms, and any allergy testing performed by your clinician.

Short name

Regional Allergen Mix 2 IgE

Frequently asked questions

Does a positive result mean I am allergic?
It means you are sensitized to one or more allergens in the mixture. Clinical allergy is diagnosed by combining the result with symptoms and other appropriate testing.
What allergens are included in Regional Allergen Mix 2?
The mixture contains allergens commonly found in a particular geographic area, but its exact composition can vary by laboratory or product. Ask the laboratory or ordering clinician for the specific allergens included.
Can this test replace a skin-prick test?
It can help identify possible allergens, but it may not provide the same level of detail as skin-prick testing or other allergy evaluation. Your clinician can determine which testing approach is most appropriate.
  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