Dermatophagoides pteronyssinus-specific IgE (serum)
This test measures your immune system’s response to a common indoor allergen, *Dermatophagoides pteronyssinus*, a mite found in household dust. It helps identify if your body overreacts to this allergen, which may trigger allergic rhinitis, asthma, or skin reactions.
["Assesses whether allergies to dust mites may be contributing to your symptoms."]
Key facts at a glance
- LOINC
- 103053-5
- Short code
- D pteronyss (nDer p) 1 IgE RAST
- Synonyms
- D pteronyss (nDer p) 1 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 Does This Test Measure?
IgE (Immunoglobulin E) is a protein produced by your immune system in response to allergens. When your body detects *Dermatophagoides pteronyssinus* (a mite), it may produce elevated IgE levels as part of an allergic reaction. This test specifically looks for IgE antibodies directed against this allergen.
Why Might You Need This Test?
Your doctor may recommend this test if you have symptoms like sneezing, itchy eyes, wheezing, or skin rashes that suggest allergies to dust mites. It can help confirm whether dust mite exposure is a trigger for your allergic reactions.
How Is the Test Performed?
A small blood sample is taken from your arm. The sample is sent to a lab where it is analyzed using an immunoassay method to detect IgE antibodies specific to *Dermatophagoides pteronyssinus*. Results are reported as a qualitative (positive/negative) or quantitative measurement of IgE levels.
What Do the Results Mean?
A positive result indicates your immune system has produced IgE antibodies against this allergen, suggesting an allergic reaction. A negative result means no detectable IgE antibodies were found. Results alone do not diagnose allergies but support further evaluation by an allergist.
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: Allergy Testing and Management
Short name
IgE to Dust Mite (D. pteronyssinus)
Frequently asked questions
How common is this test?
Can I take anything special before this test?
Will I need to avoid certain foods or environments before the 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 16, 2026. · Read our editorial policy