Tree Allergen Mix 7 IgE, Serum — Radioallergosorbent Test (RAST)
A blood test that measures IgE antibodies to a panel of seven tree allergens to help identify possible tree-related allergies.
["Detectable tree-specific IgE may indicate sensitization to one or more tree allergens, but it must be interpreted with your symptoms and exposure history."]
Key facts at a glance
- LOINC
- 82036-5
- Short code
- Tree Allerg Mix7 IgE RAST
- Synonyms
- Tree Allerg Mix7 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 tree-specific IgE antibodies in a blood sample. IgE is an immune-system protein that can form in response to particular tree allergens. The results are reported for a standardized panel of seven tree allergens.
Why might I need this test?
This test may be ordered if you have symptoms such as sneezing, watery eyes, wheezing, or hives after exposure to trees. It can help identify which tree allergens are more likely to trigger an immune response.
How is the test performed?
A healthcare professional draws blood from a vein and sends it to a laboratory. The laboratory uses an immunoassay to detect IgE antibodies to the tree allergens included in the mix 7 panel. RAST is an older term commonly used for this type of blood allergy testing.
How do I prepare for the test?
No fasting or special preparation is usually required. Tell your healthcare provider about your allergy symptoms, possible exposures, and any treatments or medicines you are using, since these details can help interpret the results.
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 means that IgE antibodies to one or more tree allergens were detected, indicating an immune sensitization. This may be consistent with a tree-related allergy, but it can also occur without symptoms. Results should therefore be interpreted alongside your history, examination, and, when needed, other allergy testing.
Short name
Tree Allergen Mix 7 IgE
Frequently asked questions
Does a positive result confirm a tree allergy?
Can this test identify exactly which tree caused my symptoms?
Do I need to stop taking 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