Dermatophagoides pteronyssinus (Dp) Immunoglobulin E (IgE) by Immunofluorescence
This test measures the level of Immunoglobulin E (IgE) antibodies in your blood that react to the common house dust mite *Dermatophagoides pteronyssinus*. IgE is linked to allergic reactions, including asthma, hay fever, and skin allergies.
["IgE levels help identify potential allergies to common household allergens like dust mites."]
Key facts at a glance
- LOINC
- 97965-8
- Short code
- D pteronyss (rDer p) 1 IgG4-mCnc
- Synonyms
- D pteronyss (rDer p) 1 IgG4-mCnc
- Category
- coagulation
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Ref low
- 0.8
- Ref high
- 1.2
- Critical range
- — – 5 N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- CPT
- 85610
- SNOMED
- 396252006
- 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
Why This Test Might Be Ordered
Your doctor may recommend this test if you have symptoms like sneezing, itchy eyes, wheezing, or skin rashes that suggest an allergy to dust mites. It’s also used to confirm allergies before starting allergy treatments or immunotherapy.
What to Expect Before the Test
No special preparation is needed. A blood sample will be drawn from a vein in your arm. The process usually takes a few minutes, and you may feel a brief pinch. The lab will then analyze the sample for IgE antibodies specific to the dust mite allergen.
What the Results Mean
Results are reported as a numerical value representing the concentration of IgE antibodies in your blood. Higher levels may indicate an allergic reaction to the dust mite, but interpretation depends on clinical symptoms and medical history. Your doctor will discuss the results with you.
Common Causes of Positive Results
A positive result suggests your immune system is reacting to the dust mite allergen. This can occur in people with dust mite allergies, asthma, or other allergic conditions. However, not everyone with elevated IgE levels will have symptoms.
Reference range
INR: 0.8-1.2 (warfarin: 2.0-3.0)N/A
Inform your healthcare provider if you are taking blood thinners. No special preparation required.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Elevated IgE levels to *Dermatophagoides pteronyssinus* are strongly associated with allergic reactions, including allergic rhinitis (hay fever), asthma, and eczema. This test helps diagnose allergies and guides treatment plans, such as allergy immunotherapy (allergy shots) or avoiding allergen exposure.
Short name
Dp IgE (Dermatophagoides pteronyssinus Allergen IgE)
Frequently asked questions
What does a positive IgE test for dust mites mean?
Can this test be used to diagnose asthma?
How often should I get 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 16, 2026. · Read our editorial policy