Dermatophagoides pteronyssinus-specific Immunoglobulin E (IgE) by Immunofluorescence
This test measures your body’s immune response to a common indoor allergen found in dust mites, which can trigger allergic reactions.
["Helps identify if allergies to dust mites may be contributing to symptoms like sneezing, itching, or asthma."]
Key facts at a glance
- LOINC
- 103054-3
- Short code
- D pteronyss (rDer p) 2 IgE RAST
- Synonyms
- D pteronyss (rDer p) 2 IgE RAST
- Category
- coagulation
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Ref low
- 10
- Ref high
- 40
- Critical range
- — – 5 N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- rast
- 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 This Test Measures
IgE antibodies are part of your immune system that react to allergens. This test detects specific IgE antibodies directed against *Dermatophagoides pteronyssinus*, a common dust mite. Elevated levels may suggest an allergic sensitivity to this allergen.
Why It’s Done
Your doctor may order this test if you have symptoms like persistent sneezing, runny nose, itchy eyes, or wheezing that appear to be triggered by indoor allergens. It can help confirm whether dust mites are a contributing factor.
How the Test Works
A small blood sample is taken from your arm. The sample is analyzed using immunofluorescence to detect IgE antibodies specific to *Dermatophagoides pteronyssinus*. This method helps identify if your immune system is reacting to this allergen.
What to Expect Before the Test
No special preparation is needed. You may have a slight bruise or soreness at the injection site, but this usually resolves quickly. If you’re on blood-thinning medication, let your doctor know before the test.
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.
Clinical Significance
Short name
IgE to Dust Mite (D. pteronyssinus)
Frequently asked questions
Elevated IgE levels to *Dermatophagoides pteronyssinus* suggest an allergic reaction to dust mites, which are common in homes. This can help guide treatment options such as allergen avoidance, antihistamines, or immunotherapy (allergy shots).
How long will I need to wait for results?
Can I take anything before the blood draw?
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 16, 2026. · Read our editorial policy