Allergen-Specific IgE, Allergen Mix 2
A blood test that detects IgE antibodies to a mixture of allergens. The exact allergens in “Mix 2” may vary by laboratory.
["This test helps identify whether your immune system reacts to the allergens included in the tested mixture."]
Key facts at a glance
- LOINC
- 82046-4
- Short code
- Epid Allerg Mix2 IgE RAST
- Synonyms
- Epid Allerg Mix2 IgE RAST
- Category
- liver
- 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
- multidisk
- 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 is this test?
This test measures allergen-specific IgE antibodies in a blood sample. IgE is an immune-system protein associated with allergic reactions, and the results are reported for the allergens included in a laboratory’s “Allergen Mix 2” panel.
Why might I need this test?
Your clinician may order this test to help evaluate unexplained sneezing, wheezing, skin symptoms, or other possible allergic reactions. It may also be used to identify possible triggers before allergy-management decisions are made.
How is the test performed?
A blood sample is collected and analyzed in the laboratory for IgE antibodies against the allergens in the mixture. Because the allergens included in “Mix 2” can differ among laboratories or test systems, ask the testing laboratory which components were tested.
How do I prepare for the test?
This test usually does not require fasting or other special preparation. Tell your clinician about any medications or supplements you use, and do not stop prescribed medicines unless your clinician advises you to do so.
Reference range
Adult: 10-40 U/LN/A
No special preparation required. Avoid fatty meals before the test if possible.
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 tested mixture, suggesting sensitization. Results must be interpreted with your symptoms, possible exposures, and medical history because sensitization does not always mean that a specific allergen causes your symptoms. A negative result lowers the likelihood of allergy to the tested allergens but does not exclude allergies to other substances.
Short name
Allergen Mix 2 IgE
Frequently asked questions
Does a positive result mean I am allergic?
Which allergens are included in Allergen Mix 2?
Can I stop allergy medicines before this 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 17, 2026. · Read our editorial policy